Links

  • Born 1962
  • Diploma studies in Chemistry, 1982-1988, University of Giessen (Germany)
  • PhD Thesis, 1988-1991, University of Hannover (Germany)
  • Postdoc, 1991-93, University of Bern (Switzerland)
  • Senior scientist, 1993-2005, University of Bern
  • Lecturer since 1999, Habilitation 2014, University of Bern
  • Group leader in solid state chemistry since 2005, University of Bern

 

 

  • Chemistry and crystal growth of rare-earth and transition metal halides
  • Upconversion phosphors and scintillator materials
  • Magnetic structures and excitations 

Journal Article

Villanueva Delgado, Pedro; Biner, Daniel; Krämer, Karl (2017). Judd-Ofelt analysis of β-NaGdF4: Yb3+, Tm3+ and β-NaGdF4:Er3+ single crystals. Journal of luminescence, 189, pp. 84-90. Elsevier 10.1016/j.jlumin.2016.04.023

Ward, Simon; Bouillot, P.; Kollath, C.; Giamarchi, T.; Schmidt, K.P.; Normand, Bruce; Krämer, Karl; Biner, Daniel; Bewley, R.; Guidi, T.; Boehm, Martin; McMorrow, Des; Rüegg, Christian (2017). Bound states and field-polarized Haldane modes in a quantum spin ladder. Physical review letters, 118(17) American Physical Society 10.1103/PhysRevLett.118.177202

Radu, Ioana; Kravtsov, Victor Ch.; Ostrovsky, Serghei M.; Reu, Oleg S.; Krämer, Karl; Decurtins, Silvio; Liu, Shi-Xia; Klokishner, Sophia I.; Baca, Svetlana G. (2017). Tetranuclear {Co II 2 Co III 2 }, Octanuclear {Co II 4 Co III 4 }, and Hexanuclear {Co III 3 Dy III 3 } Pivalate Clusters: Synthesis, Magnetic Characterization, and Theoretical Modeling. Inorganic chemistry, 56(5), pp. 2662-2676. American Chemical Society 10.1021/acs.inorgchem.6b02827

Williams, Alan Francis; Granelli, Matteo; Downward, Alan M; Huber, Robin; Guenée, Laure; Besnard, Céline; Krämer, Karl; Decurtins, Silvio; Liu, Shi-Xia; Thompson, Laurence K (2017). Dinuclear complexes formed by hydrogen bonds: synthesis, structure and magnetic and electrochemical properties. Chemistry - a European journal, 23(29), pp. 7104-7112. Wiley-VCH 10.1002/chem.201700591

Klein, Y. Maximilian; Lanzilotto, Angelo; Prescimone, Alessandro; Krämer, Karl; Decurtins, Silvio; Liu, Shi-Xia; Constable, Edwin C.; Housecroft, Catherine E. (2017). Coordination behaviour of 1-(3,2':6',3''-terpyridin-4'-yl)ferrocene: structure and magnetic and electrochemical properties of a tetracopper dimetallomacrocycle. Polyhedron, 129, pp. 71-76. Elsevier 10.1016/j.poly.2017.03.030

Senchyk, Ganna A.; Lysenko, Andrey B.; Domasevitch, Konstantin V.; Erhart, Oliver; Henfling, Stefan; Krautscheid, Harald; Rusanov, Eduard B.; Krämer, Karl; Decurtins, Silvio; Liu, Shi-Xia (2017). Exploration of a Variety of Copper Molybdate Coordination Hybrids Based on a Flexible Bis(1,2,4-triazole) Ligand: A Look through the Composition-Space Diagram. Inorganic chemistry, 56(21), pp. 12952-12966. American Chemical Society 10.1021/acs.inorgchem.7b01735

Krämer, Karl (2017). Resonance in Er3+ Upconversion Excitation. Journal of luminescence, 189, pp. 78-83. Elsevier 10.1016/j.jlumin.2016.11.056

Tessitore, Gabriella; Mudring, A.-V.; Krämer, Karl (2017). Room temperature synthesis of β-NaGdF4: RE3+ (RE = Eu, Er) nanocrystallites and their luminescence. Journal of luminescence, 189, pp. 91-98. Elsevier 10.1016/j.jlumin.2017.03.021

Motalov, V.B.; Dunaev, A.M.; Tsybert, A.O.; Kudin, L.S.; Butman, M.F.; Krämer, Karl (2017). Sublimation enthalpies of gadolinium and thulium triiodides and formation enthalpies of the molecules LnI3, Ln2I6, and Ln3I9 (Ln = Gd, Tm). International journal of mass spectrometry, 417, pp. 29-33. Elsevier 10.1016/j.ijms.2017.04.007

Skoulatos, M.; Månsson, M.; Fiolka, Christoph; Krämer, Karl; Schefer, J.; White, J.S.; Rüegg, Ch. (2017). Dimensional reduction by pressure in the magnetic framework material CuF2(D2O)2pyz: From spin-wave to spinon excitations. Physical Review B, 96(2) American Institute of Physics 10.1103/PhysRevB.96.020414

Lysenko, Andrey B.; Senchyk, Ganna A.; Lukashuk, Liliana V.; Domasevitch, Konstantin V.; Handke, Marcel; Lincke, Jörg; Krautscheid, Harald; Rusanov, Eduard B.; Krämer, Karl; Decurtins, Silvio; Liu, Shi-Xia (2016). Composition Space Analysis in the Development of Copper Molybdate Hybrids Decorated by a Bifunctional Pyrazolyl/1,2,4-Triazole Ligand. Inorganic chemistry, 55(1), pp. 239-250. American Chemical Society 10.1021/acs.inorgchem.5b02188

Botezat, Olga; Filippova, Irina G.; Hauser, Jürg; Krämer, Karl; Decurtins, Silvio; Liu, Shi-Xia; Baca, Svetlana G. (2016). Synthesis, crystal structure, and properties of a μ 3 -oxo-trichromium(III) propionate cluster with pyrazole. Journal of Coordination Chemistry, 69(1), pp. 72-80. Taylor & Francis 10.1080/00958972.2015.1119272

Chisca, Diana; Croitor, Lilia; Coropceanu, Eduard B.; Petuhov, Oleg; Baca, Svetlana G.; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Rivera-Jacquez, Hector J.; Masunov, Artëm E.; Fonari, Marina S. (2016). From pink to blue and back to pink again: changing the Co( ii ) ligation in a two-dimensional coordination network upon desolvation. CrystEngComm, 18(3), pp. 384-389. Royal Society of Chemistry 10.1039/c5ce01581b

Radu, Ioana; Kravtsov, Victor Ch.; Krämer, Karl; Decurtins, Silvio; Liu, Shi-Xia; Reu, Oleg S.; Ostrovsky, Serghei M.; Klokishner, Sophia I.; Baca, Svetlana G. (2016). Synthesis, Characterization, and Modeling of Magnetic Properties of a Hexanuclear Amino Alcohol-Supported {Co II 2 Co III 2 Dy III 2 } Pivalate Cluster. Journal of physical chemistry. C, 120(13), pp. 7435-7443. American Chemical Society 10.1021/acs.jpcc.6b01378

Villanueva Delgado, Pedro; Krämer, Karl; Valiente, Rafael; de Jong, Mathijs; Meijerink, Andries (2016). Modeling blue to UV upconversion in β-NaYF 4 :Tm 3+. Physical Chemistry Chemical Physics, 18(39), pp. 27396-27404. Royal Society of Chemistry 10.1039/C6CP04347J

Chisca, Diana; Croitor, Lilia; Coropceanu, Eduard B.; Petuhov, Oleg; Volodina, Galina F.; Baca, Svetlana G.; Krämer, Karl; Hauser, Jürg; Decurtins, Silvio; Liu, Shi-Xia; Fonari, Marina S. (2016). Six Flexible and Rigid Co(II) Coordination Networks with Dicarboxylate and Nicotinamide-Like Ligands: Impact of Noncovalent Interactions in Retention of Dimethylformamide Solvent. Crystal growth & design, 16(12), pp. 7011-7024. American Chemical Society 10.1021/acs.cgd.6b01226

de Jong, Mathijs; Biner, Daniel; Krämer, Karl; Barandiarán, Zoila; Seijo, Luis; Meijerink, Andries (2016). New Insights in 4f 12 5d 1 Excited States of Tm 2+ through Excited State Excitation Spectroscopy. Journal of physical chemistry letters, 7(14), pp. 2730-2734. American Chemical Society 10.1021/acs.jpclett.6b00924

Wyss, Pradeep P; Lamichhane, Surya; Rauber, Martin; Thomann, Ralf; Krämer, Karl; Shastri, V Prasad (2016). Tripod USPIONs with high aspect ratio show enhanced T2 relaxation and cytocompatibility. Nanomedicine, 11(9), pp. 1017-1030. Future Medicine 10.2217/nnm.16.8

Wehinger, Björn; Fiolka, Christoph; Graf, David; Coniglio, William A.; Grockowiak, Audrey; Chen, Jyong-Hao; Gukelberger, Jan; Skoulatos, Markus; Krämer, Karl; Tozer, Stan; Mudry, Christopher; Rüegg, Christian (2016). Giant pressure dependence and dimensional crossover in a metal-organic Heisenberg antiferromagnet (Submitted). NN

Braccini, Saverio; Krämer, Karl; Chapenoire, Stephane (2016). X-Ray and Mössbauer Study of Magnetic Black and from Mayotte Island. World journal of nuclear science and technology, 6(04), pp. 191-198. Scientific Research Publishing 10.4236/wjnst.2016.64020

Babkevich, Peter; Nikseresht, N.; Kovacevic, I.; Piatek, Julian; Dalla Piazza, B.; Kraemer, Conradin; Krämer, Karl; Prokes, K.; Matas, S.; Jensen, Jens; Ronnow, Henrik M. (2016). Phase diagram of diluted Ising ferromagnet LiHoxY1−xF4. Physical Review B, 94(17), p. 174443. American Institute of Physics 10.1103/PhysRevB.94.174443

Dunaev, A. M.; Motalov, V. B.; Kudin, L. S.; Butman, M. F.; Krämer, Karl (2016). Study of Molecular and Ionic Vapor Composition over CeI3 by Knudsen Effusion Mass Spectrometry. Journal of Spectroscopy, 2016, pp. 1-9. Hindawi Publishing Corporation 10.1155/2016/2368131

Alemany, Pere; Canadell, Enric; Geng, Yan; Hauser, Jürg; Macchi, Piero; Krämer, Karl; Decurtins, Silvio; Liu, Shi-Xia (2015). Exploring the Electronic Structure of an Organic Semiconductor Based on a Compactly Fused Electron Donor-Acceptor Molecule. ChemPhysChem, 16(7), pp. 1361-1365. Wiley-VCH 10.1002/cphc.201500090

Croitor, Lilia; Coropceanu, Eduard B.; Petuhov, Oleg; Krämer, Karl; Baca, Svetlana G.; Liu, Shi-Xia; Decurtins, Silvio; Fonari, Marina S. (2015). A one-dimensional coordination polymer based on Cu 3 -oximato metallacrowns bridged by benzene-1,4-dicarboxylato ligands: structure and magnetic properties. Dalton transactions, 44(17), pp. 7896-7902. Royal Society of Chemistry 10.1039/C5DT00533G

Amacher, Anneliese; Puigmari-Luis, josep; Geng, Yan; Lebedev, Victor; Laukhin, Vladimir; Krämer, Karl; Hauser, Jürg; Amabilino, David B; Decurtins, Silvio; Liu, Shi-Xia (2015). Coordination-directed self-assembly of a simple benzothiadiazole-fused tetrathiafulvalene to low-bandgap metallogels. Chemical communications, 51(81), pp. 15063-15066. Royal Society of Chemistry 10.1039/C5CC06819C

Villanueva Delgado, Pedro; Krämer, Karl; Valiente, Rafael (2015). Simulating Energy Transfer and Upconversion in β-NaYF 4 : Yb 3+ , Tm 3+. Journal of physical chemistry. C, 119(41), pp. 23648-23657. American Chemical Society 10.1021/acs.jpcc.5b06770

Babkevich, P.; Finco, A.; Jeong, M.; Dalla Piazza, B.; Kovacevic, I.; Klughertz, G.; Krämer, Karl; Kraemer, C.; Adroja, D. T.; Goremychkin, E.; Unruh, T.; Strässle, T.; Di Lieto, A.; Jensen, J.; Rønnow, H. M. (2015). Neutron spectroscopic study of crystal-field excitations and the effect of the crystal field on dipolar magnetism in Li R F 4 ( R = Gd , Ho, Er, Tm, and Yb). Physical review. B - condensed matter and materials physics, 92(14), p. 144422. American Physical Society 10.1103/PhysRevB.92.144422

Alekhin, Mikhail S.; Awater, Roy H.P.; Biner, Daniel; Krämer, Karl; de Haas, Johan T.M.; Dorenbos, Pieter (2015). Luminescence and spectroscopic properties of Sm2+ and Er3+ doped SrI2. Journal of luminescence, 167, pp. 347-351. North-Holland 10.1016/j.jlumin.2015.07.002

Furrer, A.; Podlesnyak, A.; Krämer, Karl (2015). Extraction of exchange parameters in transition-metal perovskites. Physical review. B - condensed matter and materials physics, 92(10) American Physical Society 10.1103/PhysRevB.92.104415

Arnaoutakis, Georgios E.; Marques-Hueso, Jose; Ivaturi, Aruna; Fischer, Stefan; Goldschmidt, Jan C; Krämer, Karl; Richards, Bryce S. (2015). Enhanced energy conversion of up-conversion solar cells by the integration of compound parabolic concentrating optics. Solar energy materials and solar cells, 140, pp. 217-223. North-Holland 10.1016/j.solmat.2015.04.020

Awater, Roy H. P.; Krämer, Karl; Dorenbos, Pieter (2015). Effects of Na+, Mg2+, Ca2+, Sr2 + and Ba2 + Doping on the Scintillation Properties of CeBr_3. IEEE transactions on nuclear science, 62(5), pp. 2343-2348. Professional Technical Group on Nuclear Science, Institute of Electrical and Electronics Engineers IEEE 10.1109/tns.2015.2463736

ten Kate, Otmar M.; Krämer, Karl; van der Kolk, Erik (2015). Efficient luminescent solar concentrators based on self-absorption free, Tm2+ doped halides. Solar energy materials and solar cells, 140, pp. 115-120. North-Holland 10.1016/j.solmat.2015.04.002

Sergeev, D.N.; Motalov, V.B.; Butman, M.F.; Kudin, L.S.; Krämer, Karl (2015). Vapor phase composition as an indicator of thermal stability of the Sm, Eu, and Yb chlorides. Thermochimica Acta, 622, pp. 51-54. Elsevier 10.1016/j.tca.2015.06.034

Dunaev, A.M.; Kudin, L.S.; Motalov, V.B.; Ivanov, D.A.; Butman, M.F.; Krämer, Karl (2015). Mass spectrometric study of molecular and ionic sublimation of lanthanum triiodide. Thermochimica Acta, 622, pp. 82-87. Elsevier 10.1016/j.tca.2015.09.008

Krämer, Karl; Keller, Lukas (2014). Phase Transitions of YbBr2. Zeitschrift für anorganische und allgemeine Chemie, 640(15), pp. 3166-3171. Wiley-VCH 10.1002/zaac.201400165

Alekhin, Mikhail S.; Weber, Sandra; Krämer, Karl; Dorenbos, Pieter (2014). Optical properties and defect structure of Sr2+ co-doped LaBr3:5%Ce scintillation crystals. Journal of luminescence, 145, pp. 518-524. Amsterdam: North-Holland 10.1016/j.jlumin.2013.08.019

Sergeev, D.N.; Dunaev, A.M.; Butman, M.F.; Ivanov, D.A.; Kudin, L.S.; Krämer, Karl (2014). Energy characteristics of molecules and ions of ytterbium iodides. International journal of mass spectrometry, 374, pp. 1-3. Elsevier 10.1016/j.ijms.2014.09.014

Lanza, Arianna; Fiolka, Christoph; Fisch, Martin; Casati, N.; Skoulatos, M.; Rüegg, C.; Krämer, Karl; Macchi, Piero (2014). New magnetic frameworks of [(CuF 2 (H 2 O) 2 ) x (pyz)]. Chemical communications, 50(93), pp. 14504-14507. Royal Society of Chemistry 10.1039/C4CC06696K

Senchyk, Ganna A.; Lysenko, Andrey B.; Babaryk, Artem A.; Rusanov, Eduard B.; Krautscheid, Harald; Neves, Patrícia; Valente, Anabela A.; Gonçalves, Isabel S.; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Domasevitch, Konstantin V. (2014). Triazolyl–Based Copper–Molybdate Hybrids: From Composition Space Diagram to Magnetism and Catalytic Performance. Inorganic chemistry, 53(19), pp. 10112-10121. American Chemical Society 10.1021/ic5009736

Dreiser, Jan; Westerström, Rasmus; Zhang, Yang; Popov, Alexey A.; Dunsch, Lothar; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Greber, Thomas (2014). The Metallofullerene Field-Induced Single-Ion Magnet HoSc 2 N@C 80. Chemistry - a European journal, 20(42), pp. 13536-13540. Wiley-VCH 10.1002/chem.201403042

Arnaoutakis, Georgios E.; Marques-Hueso, Jose; Ivaturi, Aruna; Krämer, Karl; Fischer, Stefan; Goldschmidt, Jan Christoph; Richards, Bryce S. (2014). Enhanced up-conversion for photovoltaics via concentrating integrated optics. Optics express, 22(S2), A452-A464. Optical Society of America 10.1364/OE.22.00A452

Botezat, Olga; van Leusen, Jan; Kravtsov, Victor Ch.; Filippova, Irina G.; Hauser, Jürg; Speldrich, Manfred; Hermann, Raphaël P.; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Kögerler, Paul; Baca, Svetlana G. (2014). Interpenetrated (8,3)-c and (10,3)-b Metal–Organic Frameworks Based on {Fe III 3 } and {Fe III 2 Co II } Pivalate Spin Clusters. Crystal growth & design, 14(9), pp. 4721-4728. American Chemical Society 10.1021/cg5008236

Čižmár, E.; Ozerov, M.; Krämer, Karl; Rüegg, Ch.; Zvyagin, S.A. (2014). Observation of Anisotropic Exchange in a Spin Ladder by ESR. Acta Physica Polonica A, 126(1), pp. 238-239. Polish Academy of Sciences 10.12693/APhysPolA.126.238

Rüdiger, Marc; Fischer, Stefan; Frank, Judith; Ivaturi, Aruna; Richards, Bryce S.; Krämer, Karl; Hermle, Martin; Goldschmidt, Jan Christoph (2014). Bifacial n-type silicon solar cells for upconversion applications. Solar energy materials and solar cells, 128, pp. 57-68. North-Holland 10.1016/j.solmat.2014.05.014

MacDougall, Sean K.W.; Ivaturi, Aruna; Marques-Hueso, Jose; Krämer, Karl; Richards, Bryce S. (2014). Broadband photoluminescent quantum yield optimisation of Er3+-doped β-NaYF4 for upconversion in silicon solar cells. Solar energy materials and solar cells, 128, pp. 18-26. North-Holland 10.1016/j.solmat.2014.05.004

Ryll, H.; Kiefer, K.; Rüegg, Ch.; Ward, S.; Krämer, Karl; Biner, Daniel; Bouillot, P.; Coira, E.; Giamarchi, T.; Kollath, C. (2014). Magnetic entropy landscape and Grüneisen parameter of a quantum spin ladder. Physical review. B - condensed matter and materials physics, 89(14) American Physical Society 10.1103/PhysRevB.89.144416

Furrer, A.; Podlesnyak, A.; Krämer, Karl; Embs, J. P.; Pomjakushin, V.; Strässle, Th. (2014). Propagation of defects in doped magnetic materials of different dimensionality. Physical review. B - condensed matter and materials physics, 89(14) American Physical Society 10.1103/PhysRevB.89.144402

Fischer, Stefan; Martín-Rodríguez, Rosa; Fröhlich, Benjamin; Krämer, Karl; Meijerink, Andries; Goldschmidt, Jan Christoph (2014). Upconversion quantum yield of Er3+-doped β-NaYF4 and Gd2O2S: The effects of host lattice, Er3+ doping, and excitation spectrum bandwidth. Journal of luminescence, 153, pp. 281-287. North-Holland 10.1016/j.jlumin.2014.03.047

Degtyarenko, Anna S.; Handke, Marcel; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Rusanov, Eduard B.; Thompson, Laurence K.; Krautscheid, Harald; Domasevitch, Konstantin V. (2014). Mixed-ligand hydroxocopper(ii)/pyridazine clusters embedded into 3D framework lattices. Dalton transactions, 43(22), pp. 8530-8542. Royal Society of Chemistry 10.1039/c4dt00174e

Westerström, Rasmus; Dreiser, Jan; Piamonteze, Cinthia; Muntwiler, Matthias; Weyeneth, Stephen; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Popov, Alexey; Yang, Shangfeng; Dunsch, Lothar; Greber, Thomas (2014). Tunneling, remanence, and frustration in dysprosium-based endohedral single-molecule magnets. Physical review. B - condensed matter and materials physics, 89(6) American Physical Society 10.1103/PhysRevB.89.060406

Geng, Yan; Fiolka, Christoph; Krämer, Karl; Hauser, Jürg; Laukhin, Vladimir; Decurtins, Silvio; Liu, Shi-Xia (2014). A quinoxaline-fused tetrathiafulvalene derivative and its semiconducting charge-transfer salt: synthesis, crystal structures and physical properties. New journal of chemistry, 38(5), pp. 2052-2057. Royal Society of Chemistry 10.1039/c3nj01200j

Merchant, P.; Normand, B.; Krämer, Karl; Boehm, M.; McMorrow, D. F.; Rüegg, Ch. (2014). Quantum and classical criticality in a dimerized quantum antiferromagnet. Nature physics, 10(5), pp. 373-379. Nature Publishing Group 10.1038/nphys2902

Gomila, Antoine; Duval, Sylvain; Besnard, Céline; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Williams, Alan F. (2014). Tetracarboxylate Ligands as New Chelates Supporting Copper(II) Paddlewheel-Like Structures. Inorganic chemistry, 53(5), pp. 2683-2691. American Chemical Society 10.1021/ic403077q

Stepuk, Alexander; Casola, Gioele; Schumacher, Christoph M.; Krämer, Karl; Stark, Wendelin J. (2014). Purification of NaYF 4 -Based Upconversion Phosphors. Chemistry of materials, 26(6), pp. 2015-2020. American Chemical Society 10.1021/cm403459v

Fischer, S.; Fröhlich, B.; Steinkemper, H.; Krämer, Karl; Goldschmidt, J.C. (2014). Absolute upconversion quantum yield of β-NaYF4 doped with Er3+ and external quantum efficiency of upconverter solar cell devices under broad-band excitation considering spectral mismatch corrections. Solar energy materials and solar cells, 122, pp. 197-207. North-Holland 10.1016/j.solmat.2013.12.001

Quarati, F.G.A.; Alekhin, M.S.; Krämer, Karl; Dorenbos, P. (2014). Co-doping of CeBr3 scintillator detectors for energy resolution enhancement. Nuclear instruments & methods in physics research. Section A - accelerators, spectrometers, detectors and associated equipment, 735, pp. 655-658. North-Holland 10.1016/j.nima.2013.10.004

Pascu, Gabriel; Deville, Claire; Clifford, Sarah E.; Guenée, Laure; Besnard, Céline; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Tuna, Floriana; McInnes, Eric J. L.; Winpenny, Richard E. P.; Williams, Alan F. (2014). The coordination chemistry of tartronic acid with copper: magnetic studies of a quasi-equilateral tricopper triangle. Dalton transactions, 43(2), pp. 656-662. Royal Society of Chemistry 10.1039/c3dt51838h

Alekhin, Mikhail S.; Biner, Daniel; Krämer, Karl; Dorenbos, Pieter (2014). Optical and scintillation properties of CsBa2I5:Eu2+. Journal of luminescence, 145, pp. 723-728. North-Holland 10.1016/j.jlumin.2013.08.058

Fischer, Stefan; Ivaturi, Aruna; Frohlich, Benjamin; Rudiger, Marc; Richter, Armin; Krämer, Karl; Richards, Bryce S.; Goldschmidt, Jan Christoph (2014). Upconverter Silicon Solar Cell Devices for Efficient Utilization of Sub-Band-Gap Photons Under Concentrated Solar Radiation. IEEE journal of photovoltaics, 4(1), pp. 183-189. Institute of Electrical and Electronics Engineers IEEE 10.1109/JPHOTOV.2013.2282744

Alekhin, Mikhail S.; Biner, Daniel; Krämer, Karl; Dorenbos, Pieter (2014). Optical and scintillation properties of SrI2:Yb2+. Optical materials, 37, pp. 382-386. North-Holland 10.1016/j.optmat.2014.06.030

Furrer, A.; Podlesnyak, A.; Krämer, Karl; Strässle, Th. (2014). Defect propagation in one-, two-, and three-dimensional compounds doped by magnetic atoms. Physical review. B - condensed matter and materials physics, 90(14) American Physical Society 10.1103/PhysRevB.90.144434

Sergeev, Dmitry N.; Motalov, Vladimir B.; Butman, Mikhail F.; Kiselev, Artem E.; Kudin, Lev S.; Krämer, Karl (2014). Atomization Energies of LnX Molecules (Ln = Sm, Eu, and Yb; X = Cl, Br, and I). Journal of chemical & engineering data, 59(12), pp. 4010-4014. American Chemical Society 10.1021/je500550s

Fischer, Stefan; Fröhlich, Benjamin; Krämer, Karl; Goldschmidt, Jan Christoph (2014). Relation between Excitation Power Density and Er3+ Doping Yielding the Highest Absolute Upconversion Quantum Yield. Journal of physical chemistry. C, 118(51), pp. 30106-30114. American Chemical Society 10.1021/jp510209x

Piatek, J. O.; Kovacevic, I.; Babkevich, P.; Dalla Piazza, B.; Neithardt, S.; Gavilano, J.; Krämer, Karl; Rønnow, H. M. (2014). Nonequilibrium hysteresis and spin relaxation in the mixed-anisotropy dipolar-coupled spin-glass LiHo0.5Er0.5F4. Physical review. B - condensed matter and materials physics, 90(17), p. 174427. American Physical Society 10.1103/PhysRevB.90.174427

Sergeev, Dmitry N.; Butman, Mikhail F.; Motalov, Vladimir B.; Kudin, Lev S.; Krämer, Karl (2013). Extrapolated difference technique for the determination of atomization energies of Sm, Eu, and Yb bromides. International journal of mass spectrometry, 348, pp. 23-28. Elsevier 10.1016/j.ijms.2013.03.004

Dulcevscaia, Galina; Liu, Shi-Xia; Hauser, Jürg; Krämer, Karl; Frei, Gabriela Claudia; Möller, Andreas; Decurtins, Silvio (2013). A Benzaldehyde Derivative as a Chelating Ligand: Helical Manganese(II) Coordination Polymers Assembling into a Porous Solid. Crystal growth & design, 13(9), pp. 4138-4144. Washington, D.C.: American Chemical Society 10.1021/cg400972k

Sharga, Olena V.; Lysenko, Andrey B.; Handke, Marcel; Krautscheid, Harald; Rusanov, Eduard B.; Chernega, Alexander N.; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Bridgeman, Adam; Domasevitch, Konstantin V. (2013). Unprecedented Trapping of Difluorooctamolybdate Anions within an α-Polonium Type Coordination Network. Inorganic chemistry, 52(15), pp. 8784-8794. Washington, D.C.: American Chemical Society 10.1021/ic400954x

Piatek, J. O.; Dalla Piazza, B.; Nikseresht, N.; Tsyrulin, N.; Živković, I.; Krämer, Karl; Laver, M.; Prokes, K.; Mataš, S.; Christensen, N. B.; Rønnow, H. M. (2013). Phase diagram with an enhanced spin-glass region of the mixed Ising–XY magnet LiHo{x}Er{1-x}F{4}. Physical review. B - condensed matter and materials physics, 88(1), pp. 1-11. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.88.014408

Ivaturi, Aruna; MacDougall, Sean K. W.; Martín-Rodríguez, Rosa; Quintanilla, Marta; Marques-Hueso, Jose; Krämer, Karl; Meijerink, Andries; Richards, Bryce S. (2013). Optimizing infrared to near infrared upconversion quantum yield of β-NaYF4:Er3+ in fluoropolymer matrix for photovoltaic devices. Journal of applied physics, 114(1), 013505. Melville, N.Y.: American Institute of Physics 10.1063/1.4812578

Braccini, Saverio; Pellegrinelli, Olivier; Krämer, Karl (2013). Mössbauer, X-ray and Magnetic Studies of Black Sand from the Italian Mediterranean Sea. World journal of nuclear science and technology, 03(03), pp. 91-95. Irvine, Calif.: Scientific Research Publishing 10.4236/wjnst.2013.33016

Alekhin, Mikhail S.; Krämer, Karl W.; Dorenbos, Pieter (2013). Self-absorption in SrI2:2%Eu2+ between 78K and 600K. Nuclear instruments & methods in physics research. Section A - accelerators, spectrometers, detectors and associated equipment, 714, pp. 13-16. Amsterdam: North-Holland 10.1016/j.nima.2013.02.025

Sergeev, D. N.; Butman, M. F.; Motalov, V. B.; Kudin, L. S.; Krämer, Karl (2013). Knudsen effusion mass spectrometric determination of the complex vapor composition of samarium, europium, and ytterbium bromides. Rapid communications in mass spectrometry, 27(15), pp. 1715-1722. Chichester: Wiley 10.1002/rcm.6617

Alekhin, Mikhail S.; Biner, Daniel; Krämer, Karl; Dorenbos, Pieter (2013). Improvement of LaBr3:5%Ce scintillation properties by Li+, Na+, Mg2+, Ca2+, Sr2+, and Ba2+ co-doping. Journal of applied physics, 113(22), 224904-1-224904-7. Melville, N.Y.: American Institute of Physics 10.1063/1.4810848

Alekhin, M. S.; de Haas, J. T. M.; Khodyuk, I. V.; Krämer, Karl W.; Menge, P. R.; Ouspenski, V.; Dorenbos, P. (2013). Improvement of γ-ray energy resolution of LaBr3:Ce3+ scintillation detectors by Sr2+ and Ca2+ co-doping. Applied physics letters, 102(16), pp. 161915-1. Melville, N.Y.: American Institute of Physics 10.1063/1.4803440

Martín-Rodríguez, Rosa; Fischer, Stefan; Ivaturi, Aruna; Froehlich, Benjamin; Krämer, Karl; Goldschmidt, Jan C.; Richards, Bryce S.; Meijerink, Andries (2013). Highly Efficient IR to NIR Upconversion in Gd2O2S: Er3+ for Photovoltaic Applications. Chemistry of materials, 25(9), pp. 1912-1921. Washington, D.C.: American Chemical Society 10.1021/cm4005745

Hehlen, Markus P.; Brik, Mikhail G.; Krämer, Karl W. (2013). 50th anniversary of the Judd–Ofelt theory: An experimentalist's view of the formalism and its application. Journal of luminescence, 136, pp. 221-239. Amsterdam: North-Holland 10.1016/j.jlumin.2012.10.035

Senchyk, Ganna A.; Lysenko, Andrey B.; Krautscheid, Harald; Rusanov, Eduard B.; Chernega, Alexander N.; Krämer, Karl; Liu, Shi-Xia; Decurtins, Silvio; Domasevitch, Konstantin V. (2013). Functionalized Adamantane Tectons Used in the Design of Mixed-Ligand Copper(II) 1,2,4-Triazolyl/Carboxylate Metal–Organic Frameworks. Inorganic chemistry, 52(2), pp. 863-872. Washington, D.C.: American Chemical Society 10.1021/ic3020157

Stepuk, Alexander; Krämer, Karl; Stark, Wendelin J. (2013). Flame Synthesis of Complex Fluoride-Based Nanoparticles as Upconversion Phosphors. KONA: Powder and Particle Journal(30), pp. 267-275. Hosokawa Powder Technology Foundation

Ward, Simon; Bouillot, Pierre; Ryll, Hanjo; Kiefer, Klaus; Krämer, Karl; Rüegg, Christian; Kollath, Corinna; Giamarchi, Thierry (2013). Spin ladders and quantum simulators for Tomonaga–Luttinger liquids. Journal of Physics: Condensed Matter, 25(1), 014004. Bristol: Institute of Physics Publishing IOP 10.1088/0953-8984/25/1/014004

Hai, N.T.M.; Krämer, K.W.; Fluegel, A.; Arnold, M.; Mayer, D; Broekmann, P. (2012). Beyond interfacial anion/cation pairing: The role of Cu(I) coordination chemistry in additive-controlled copper plating. Electrochimica acta, 83, pp. 367-375. Kidlington, UK: Elsevier Science 10.1016/j.electacta.2012.07.036

Hai, N.T.M.; Oderrnatt, J.; Grimaudo, V.; Krämer, K. W.; Fluegel, A.; Arnold, M.; Mayer, D.; Broekmann, P. (2012). Potential Oscillations in Galvanostatic Cu Electrodeposition: Antagonistic and Synergistic Effects among SPS, Chloride, and Suppressor Additives. Journal of physical chemistry. C, 116(12), pp. 6913-6924. Washington, D.C.: American Chemical Society 10.1021/jp2096086

Keene, Tony D.; D'Alessandro, Deanna M.; Krämer, Karl W.; Price, Jason R.; Price, David J.; Decurtins, Silvio; Kepert, Cameron J. (2012). [V16O38(CN)](9-): A Soluble Mixed-Valence Redox-Active Building Block with Strong Antiferromagnetic Coupling. Inorganic chemistry, 51(17), pp. 9192-9199. Washington, D.C.: American Chemical Society 10.1021/ic3001834

Goldschmidt, J.C.; Fischer, S.; Steinkemper, H.; Hallermann, F.; von Plessen, G.; Krämer, K.W.; Biner, D.; Hermle, M. (2012). Increasing Upconversion by Plasmon Resonance in Metal Nanoparticles - A Combined Simulation Analysis. IEEE journal of photovoltaics, 2(2), pp. 134-140. New York, N.Y.: Institute of Electrical and Electronics Engineers IEEE 10.1109/JPHOTOV.2011.2182179

Butman, M.F.; Sergeev, D.N.; Motalov, V.B.; Kudin, L.S.; Krämer, K.W. (2012). Formation energies of molecules and anions of europium bromides. Russian journal of physical chemistry. A, 86(4), pp. 548-552. Moscow: MAIK Nauka/Interperiodica 10.1134/S003602441204005X

Fischer, Stefan; Hallermann, Florian; Eichelkraut, Toni; von Plessen, Gero; Krämer, Karl; Biner, Daniel; Steinkemper, Heiko; Hermle, Martin; Goldschmidt, Jan C. (2012). Plasmon enhanced upconversion luminescence near gold nanoparticles-simulation and analysis of the interactions. Optics express, 20(1), pp. 271-282. Washington, D.C.: Optical Society of America 10.1364/OE.20.000271

Kraemer, Conradin; Nikseresht, Neda; Piatek, Julian O.; Tsyrulin, Nikolay; Dalla Piazza, Bastien; Kiefer, Klaus; Klemke, Bastian; Rosenbaum, Thomas F.; Aeppli, Gabriel; Gannarelli, Ché; Prokes, Karel; Podlesnyak, Andrey; Strässle, Thierry; Keller, Lukas; Zaharko, Oksana; Krämer, K. W.; Rønnow, Henrik M. (2012). Dipolar Antiferromagnetism and Quantum Criticality in LiErF4. Science, 336(6087), pp. 1416-1419. Washington, D.C.: American Association for the Advancement of Science 10.1126/science.1221878

Kudin, Lev S.; Butman, Mikhail F.; Sergeev, Dmitry N.; Motalov, Vladimir B.; Krämer, Karl W. (2012). Determination of the Work Function for Europium Dibromide by Knudsen Effusion Mass Spectrometry. Journal of chemical & engineering data, 57(2), pp. 436-438. Washington, D.C.: American Chemical Society 10.1021/je201029b

MacDougall, Sean K. W.; Aruna, Ivaturi; Marques-Hueso, Jose; Krämer, Karl W.; Richards, Bryce S. (2012). Ultra-high photoluminescent quantum yield of beta-NaYF4: 10% Er3+ via broadband excitation of upconversion for photovoltaic devices. Optics express, 51(15), pp. 8385-8393. Washington, D.C.: Optical Society of America

Stepuk, Alexander; Mohn, Dirk; Grass, Robert N.; Zehnder, Matthias; Krämer, Karl W.; Pellé, Fabienne; Ferrier, Alban; Stark, Wendelin J. (2012). Use of NIR light and upconversion phosphors in light-curable polymers. Dental materials, 28(3), pp. 304-311. Amsterdam: Elsevier 10.1016/j.dental.2011.11.018

Komm, Theresa; Biner, Daniel; Neels, Antonia; Krämer, Karl W. (2012). (C5H12N)Cu2Br3: A Piperidinium Copper(I) Bromide with [Cu2Br3]− Ladders. Crystals, 2(4), pp. 1434-1440. Basel: Molecular Diversity Preservation International MDPI 10.3390/cryst2041434

Furrer, A.; Juranyi, F.; Krämer, K. W.; Schneider, M.; Strässle, Th. (2011). Single-ion versus two-ion anisotropy in magnetic compounds: A neutron scattering study. Physical review. B - condensed matter and materials physics, 83(2, 024404), pp. 1-8. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.83.024404

Goldschmidt, J.C.; Fischer, S.; Löper, P.; Krämer, K.W.; Biner, D.; Hermle, M.; Glunz, S.W. (2011). Experimental analysis of upconversion with both coherent monochromatic irradiation and broad spectrum illumination. Solar energy materials and solar cells, 95(7), pp. 1960-1963. Amsterdam: North-Holland 10.1016/j.solmat.2011.01.019

Butman, M.F.; Motalov, V.B.; Sergeev, D.N.; Kudin, L.S.; Krämer, K.W. (2011). Composition of saturated vapor over Ytterbium bromides. Russian journal of physical chemistry. A, 85(5), pp. 751-759. Moscow: MAIK Nauka/Interperiodica 10.1134/S0036024411050062

Kudin, L.S.; Motalov, V.B.; Butman, M.F.; Nakonechnyi, S.N.; Krämer, K.W. (2011). Mass-spectrometric study of molecular and ionic sublimation of gadolinium and terbium tribromides in Knudsen and Langmuir modes. Russian journal of general chemistry, 81(1), pp. 33-40. New York, N.Y.: MAIK Nauka/Interperiodica 10.1134/S1070363211010063

Butman, M.F.; Sergeev, D.N.; Motalov, V.B.; Kudin, L.S.; Kryuchkov, A.S.; Krämer, K.W. (2011). Formation enthalpies of molecules and negative ions of ytterbium bromides. Russian journal of physical chemistry. A, 85(6), pp. 922-925. Moscow: MAIK Nauka/Interperiodica 10.1134/S0036024411060124

Keene, Tony D.; Komm, Theresa; Hauser, Jürg; Krämer, Karl W. (2011). Two-dimensional coordination compounds based on Fe(II) and Co(III) hexacyanometallates with Cu(II)(dien) groups: Structures and magnetic properties. Inorganica chimica acta, 373(1), pp. 100-106. Lausanne: Elsevier Sequoia 10.1016/j.ica.2011.03.067

Poole, A.; Roessli, B.; Zaharko, O.; Krämer, K.W. (2011). The magnetic structure of multiferroic BaMnF4. Journal of Physics: Condensed Matter, 23(26), pp. 1-5. Bristol: Institute of Physics Publishing IOP 10.1088/0953-8984/23/26/266004

Mertens, Stijn; Gara, M.; Sologubenko, A.S.; Mayer, J.; Szidat, S.; Krämer, Karl W.; Jacob, T.; Schiffrin, D.J.; Wandlowski, Thomas (2011). Au@Hg nanoalloy formation through direct amalgamation: Structural, spectroscopic, and computational evidence for slow nanoscale diffusion. Advanced functional materials, 21(17), pp. 3259-3267. Weinheim: Wiley-VCH 10.1002/adfm.201100409

Renero-Lecuna, C.; Martin-Rodriguez, R.; Valiente, R.; Gonzalez, J.; Rodriguez, F.; Krämer, K.W.; Güdel, H.U. (2011). Origin of the high upconversion green luminescence efficiency in -NaYF4:2% Er3+,20% Yb3+. Chemistry of materials, 23(15), pp. 3442-3448. Washington, D.C.: American Chemical Society 10.1021/cm2004227

Alekhin, M.S.; de Haas, J.T.M.; Krämer, K.W.; Dorenbos, P. (2011). Scintillation properties of and self absorption in SrI2 : Eu2+. IEEE transactions on nuclear science, 58(5), pp. 2519-2527. New York, N.Y.: Professional Technical Group on Nuclear Science, Institute of Electrical and Electronics Engineers IEEE 10.1109/TNS.2011.2163642

Furrer, A.; Strässle, Th.; Embs, J.P.; Juranyi, F.; Pomjakushin, V.; Schneider, M.; Krämer, K.W. (2011). Direct observation of local Mn-Mn distances in the paramagnetic compound CsMnxMg1-xBr3. Physical review letters, 107(11), pp. 1-5. Ridge, N.Y.: American Physical Society 10.1103/PhysRevLett.107.115502

Krämer, Karl; Biner, Daniel; Keller, Lukas (2011). Phase Transitions of YbBr2. Swiss neutron news(39), pp. 4-10. Villigen (CH): Schweizerische Gesellschaft für Neutronenstreuung, c/o Paul-Scherrer-Institut

van der Kolk, E.; Ten Kate, O. M.; Wiegman, J. W.; Biner, D.; Kraemer, K. W. (2011). Enhanced (1)G(4) emission in NaLaF4: Pr3+, Yb3+ and charge transfer in NaLaF4: Ce3+, Yb3+ studied by fourier transform luminescence spectroscopy. Optical materials, 33(7), pp. 1024-1027. Amsterdam: North-Holland 10.1016/j.optmat.2010.08.010

Eilers, J. J.; Biner, D.; van Wijngaarden, J. T.; Krämer, K.; Güdel, H.-U.; Meijerink, A. (2010). Efficient visible to infrared quantum cutting through downconversion with the Er3+–Yb3+ couple in Cs3Y2Br9. Applied physics letters, 96(15), 151106/1-151106/3. Melville, N.Y.: American Institute of Physics 10.1063/1.3377909

Furrer, A.; Krämer, K. W.; Strassle, Th.; Biner, D.; Hauser, J.; Güdel, H. U. (2010). Magnetic and neutron spectroscopic properties of the tetrameric nickel compound [Mo12O28(m2-OH)9(m3-OH)3{Ni(H2O)3}4]·13H2O. Physical review. B - condensed matter and materials physics, 81(21), 214437/1-214437/10. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.81.214437

Sergeev, D.N.; Motalov, V.B.; Butman, M.G.; Kudin, L.S.; Krämer, K.W.; Rycerz, L.; Gaune-Escard, M. (2010). Thermodynamic parameters of vaporization of EuBr2. Russian journal of physical chemistry. A, 84(4), pp. 554-560. Moscow: MAIK Nauka/Interperiodica 10.1134/S0036024410040060

Legl, S.; Pfleiderer, C.; Krämer, K.W. (2010). Vibrating coil magnetometer for milli-Kelvin temperatures. Review of scientific instruments, 81(4), p. 43911. Woodbury, N.Y.: American Institute of Physics 10.1063/1.3374557

Putaj, P.; de Haas, J.T.M.; Krämer, K.W.; Dorenbos, P. (2010). Optical and scintillation properties of the thermal neutron scintillator Li3YCl6:Ce. IEEE transactions on nuclear science, 57(3), pp. 1675-1681. New York, N.Y.: Professional Technical Group on Nuclear Science, Institute of Electrical and Electronics Engineers IEEE 10.1109/TNS.2010.2048041

Cizmar, E.; Ozerov, M.; Wosnitza, J.; Thielemann, B.; Krämer, K.W.; Rüegg, Ch.; Piovesana, O.; Klanjsek, M.; Horvatic, M.; Berthier, C.; Zvyagin, S.A. (2010). Anisotropy of magnetic interactions in the spin-ladder compound (C5H12N)2CuBr4. Physical review. B - condensed matter and materials physics, 82(5), p. 54431. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.82.054431

Fischer, S.; Goldschmidt, J.C.; Löper, P.; Bauer, G.H.; Brüggemann, R.; Krämer, K.; Biner, D.; Hermle, M.; Glunz, S.W. (2010). Enhancement of silicon solar cell efficiency by upconversion: Optical and electrical characterization. Journal of applied physics, 108(4), p. 44912. Melville, N.Y.: American Institute of Physics 10.1063/1.3478742

Schaniel, Daniel; Woike, Theo; Behrnd, Norwid-R.; Hauser, Jürg; Krämer, Karl; Todorova, Teodora; Delley, Bernard (2009). Photogeneration of Nitrosyl Linkage Isomers in Octahedrally Coordinated Platinum Complexes in the Red Spectral Range. Inorganic chemistry, 48(23), pp. 11399-11406. Washington, D.C.: American Chemical Society 10.1021/ic901392q

Thielemann, B.; Rüegg, Ch.; Rønnow, H. M.; Läuchli, A. M.; Caux, J.-S.; Normand, B.; Biner, D.; Krämer, K. W.; Güdel, H.-U.; Stahn, J.; Habicht, K.; Kiefer, K.; Boehm, M.; McMorrow, D. F.; Mesot, J. (2009). Direct Observation of Magnon Fractionalization in the Quantum Spin Ladder. Physical review letters, 102(10), p. 107204. Ridge, N.Y.: American Physical Society 10.1103/PhysRevLett.102.107204

Valiente, R.; Rodríguez, F.; González, J.; Güdel, H. U.; Martín-Rodríguez, R.; Nataf, L.; Sanz-Ortiz, M. N.; Krämer, K. (2009). High pressure optical spectroscopy of Ce3+-doped Cs2NaLuCl6. Chemical physics, 481(1-3), pp. 149-151. Amsterdam: Elsevier 10.1016/j.cplett.2009.09.059

Thielemann, B.; Rüegg, Ch.; Kiefer, K.; Rønnow, H.M.; Normand, B.; Bouillot, P.; Kollath, C.; Orignac, E.; Citro, R.; Giamarchi, T.; Läuchli, A.M.; Biner, D.; Krämer, Karl; Wolff-Fabris, F.; Zapf, V.S.; Jaime, M.; Stahn, J.; Christensen, N.B.; Grenier, B.; McMorrow, D.F.; ... (2009). Field-controlled magnetic order in the quantum spin-ladder system (HPip)2CuBr4. Physical review. B - condensed matter and materials physics, 79(2), p. 20408. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.79.020408

Dell'Amore, R.; Schilling, A.; Krämer, Karl (2009). U(1) symmetry breaking and violated axial symmetry in TlCuCl3 and other insulating spin systems. Physical review. B - condensed matter and materials physics, 79(1), p. 14438. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.79.014438

Butman, Mikhail F; Kudin, Lev S; Motalov, Vladimir B; Kryuchkov, Artem S; Grishin, A.E.; Krämer, Karl (2009). Molecular and ionic sublimation of erbium tribromide. Russian journal of physical chemistry. A, 83(1), pp. 134-137. Moscow: MAIK Nauka/Interperiodica 10.1134/S0036024409010269

Krämer, Karl; Keller, L. (2009). High temperature phase and thermal expansion of PrBr3. Zeitschrift für anorganische und allgemeine Chemie, 635(6-7), pp. 982-987. Weinheim: Wiley-VCH 10.1002/zaac.200801407

Hartenbach, Ingo; Strobel, Sabine; Schleid, Thomas; Krämer, Karl; Dorhout, Peter K. (2009). Chloride derivatives of Lanthanide ortho-Oxomolybdates: 1. Structural comparison, magnetic properties, and luminescence of the LnCl[MoO4] representatives with the smaller lanthanides (Ln = Sm - Lu). Zeitschrift für anorganische und allgemeine Chemie, 635(6-7), pp. 966-975. Weinheim: Wiley-VCH 10.1002/zaac.200801380

Kudin, L.S.; Butman, M.F.; Motalov, V.B.; Nakonechnyi, S.N.; Krämer, Karl (2009). Molecular and ionic sublimation of neodymium tribromide polycrystals and single crystals. Russian journal of inorganic chemistry, 54(8), pp. 1181-1188. Letchworth, UK: MAIK Nauka/Interperiodica 10.1134/S0036023609080038

Sologubenko, A.V.; Lorenz, T.; Mydosh, J.A.; Thielemann, B.; Rønnow, H.M.; Rüegg, Ch.; Krämer, Karl (2009). Evidence for spinon localization in the heat transport of the spin-1/2 ladder compound (C5H12N)2CuBr4. Physical review. B - condensed matter and materials physics, 80(22), 220411(R). Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.80220411

van der Kolk, E.; Dorenbos, P.; Krämer, Karl; Biner, Daniel; Güdel, Hans-Ulrich (2008). High-resolution luminescence spectroscopy study of down-conversion routes in NaGdF4:Nd3+ and NaGdF4:Tm3+ using synchrotron radiation. Physical review. B - condensed matter and materials physics, 77(12), p. 125110. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.77.125110

Rüegg, Ch.; Normand, B.; Matsumoto, M.; Furrer, A.; McMorrow, D. F.; Krämer, Karl W.; Güdel, Hans-Ulrich; Gvasaliya, S. N.; Mutka, H.; Boehm, M. (2008). Quantum Magnets under Pressure: Controlling Elementary Excitations in TlCuCl3. Physical review letters, 100(20), p. 205701. Ridge, N.Y.: American Physical Society 10.1103/PhysRevLett.100.205701

Birowosuto, M. Danang; Dorenbos, Pieter; Krämer, Karl W.; Güdel, Hans-Ulrich (2008). Ce3+ activated LaBr3-xIx: High-light-yield and fast-response mixed halide scintillators. Journal of applied physics, 103(10), p. 103517. Melville, N.Y.: American Institute of Physics 10.1063/1.2930884

Birowosuto, M. Danang; Dorenbos, Pieter; de Haas, Johan T. M.; van Eijk, Carel W. E.; Krämer, Karl W.; Güdel, Hans-Ulrich (2008). Li-based thermal neutron scintillator research; Rb2LiYBr6:Ce3+ and other elpasolites. IEEE transactions on nuclear science, 55(3), pp. 1152-1155. New York, N.Y.: Professional Technical Group on Nuclear Science, Institute of Electrical and Electronics Engineers IEEE 10.1109/TNS.2008.922826

Birowosuto, M. Danang; Dorenbos, Pieter; Bizarri, G.; van Eijk, Carel W. E.; Krämer, Karl W.; Güdel, Hans-Ulrich (2008). Temperature dependent scintillation and luminescence characteristics of GdI3:Ce3+. IEEE transactions on nuclear science, 55(3), pp. 1164-1169. New York, N.Y.: Professional Technical Group on Nuclear Science, Institute of Electrical and Electronics Engineers IEEE 10.1109/TNS.2007.908581

Valiente, R.; Hernández, I.; Rodríguez, F.; Aguado, F.; Güdel, Hans-Ulrich; Krämer, Karl (2008). High-pressure induced absorption line narrowing in Cs3Yb2Cl9. Journal of Physics: Conference Series, 121(4), 042002. Bristol: Institute of Physics Publishing IOP 10.1088/1742-6596/121/4/042002

Reichenbaecher, Katharina; Couderc, Gaetan; Neels, Antonia; Krämer, Karl; Weber, Edwin; Hulliger, Jürg (2008). Improved thermal stability of an organic zeolite by fluorination. Journal of inclusion phenomena and molecular recognition in chemistry, 61(1-2), pp. 127-130. Dordrecht: Kluwer Academic 10.1007/s10847-007-9404-2

Lorenz, T.; Heyer, O.; Garst, M.; Anfuso, F.; Rosch, A.; Rüegg, Ch.; Krämer, Karl (2008). Diverging thermal expansion of the spin-ladder system (C5H12N)2CuBr4. Physical review letters, 100(6), p. 67208. Ridge, N.Y.: American Physical Society 10.1103/PhysRevLett.100.067208

Butman, M.F.; Motalov, V.B.; Kudin, L.S.; Grishin, A.E.; Kryuchkov, A.S.; Krämer, Karl (2008). A mass spectroscopic study of the molecular and ionic sublimation of lanthanum tribromide. Russian journal of physical chemistry. A, 82(2), pp. 164-171. Moscow: MAIK Nauka/Interperiodica 10.1134/S0036024408020040

Butman, M.F.; Kudin, L.S.; Motalov, V.B.; Vorobev, D.E.; Grishin, A.E.; Kryuchkov, A.S.; Krämer, Karl (2008). A mass spectroscopic study of the sublimation of lutetium tribromide under Knudsen and Langmuir conditions. Russian journal of physical chemistry. A, 82(4), pp. 535-543. Moscow: MAIK Nauka/Interperiodica 10.1134/S0036024408040055

Furrer, A; Juranyi, F; Krämer, Karl; Strässle, Th (2008). Reconciling exchange striction with biquadratic exchange in KMn0.1Zn0.9F3: An inelastic neutron scattering study. Physical review. B - condensed matter and materials physics, 77(13), p. 134410. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.77.134410

Butman, M.F.; Kudin, L.S.; Motalov, V.B.; Ivanov, D.A.; Sliznev, V.V.; Krämer, Karl (2008). The thermodynamic stability of the LaBr4- Ion. Russian journal of physical chemistry. A, 82(5), pp. 767-772. Moscow: MAIK Nauka/Interperiodica 10.1134/S0036024408050130

Anfuso, F; Garst, M; Rosch, A; Heyer, O; Lorenz, Th; Rüegg, Ch; Krämer, Karl (2008). Spin-spin correlation of the spin-ladder compound (C5H12N)2CuBr4 measured by magnetostriction and comparison to quantum Monte Carlo results. Physical review. B - condensed matter and materials physics, 77(23), p. 235113. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.77.235113

Krumpel, A. H.; van der Kolk, E.; Zeelenberg, D.; Bos, A. J. J.; Krämer, Karl; Dorenbos, P. (2008). Lanthanide 4f-level location in lanthanide doped and cerium-lanthanide codoped NaLaF4 by photo- and thermoluminescence. Journal of applied physics, 104(7), p. 73505. Melville, N.Y.: American Institute of Physics 10.1063/1.2955776

Butman, M.F.; Motalov, V.B.; Kudin, L.S.; Kryuchkov, A.S.; Grishin, A.E.; Krämer, Karl (2008). A jump change in the sublimation coefficient of the PrBr3 single crystal at the polymorphic transition point. Russian journal of physical chemistry. A, 82(11), pp. 1972-1974. Moscow: MAIK Nauka/Interperiodica 10.1134/S0036024408110332

Rüegg, Ch; Kiefer, K; Thielemann, B; McMorrow, D.F.; Zapf, V; Normand, B; Zvonarev, M.B.; Bouillot, P; Kollath, C; Giamarchi, T; Capponi, S; Poilblanc, D; Biner, D; Krämer, Karl (2008). Thermodynamics of the spin Luttinger liquid in a model ladder material. Physical review letters, 101(24), p. 247202. Ridge, N.Y.: American Physical Society 10.1103/PhysRevLett.101.247202

Motalov, V.B.; Butman, M.F.; Kudin, L.S.; Krämer, Karl; Rycerz, L; Gaune-Escard, M (2008). A mass spectroscopic study of the vaporization of cerium tribromide under Knudsen and Langmuir conditions. Journal of molecular liquids, 142(1-3), pp. 78-82. Amsterdam: Elsevier Science B.V. 10.1016/j.molliq.2008.05.002

Dell'Amore, Raffaele; Schilling, Andreas; Krämer, Karl (2008). Fraction of Bose-Einstein condensed triplons in TlCuCl3 from magnetization data. Physical review. B - condensed matter and materials physics, 78(22), p. 224403. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.78.224403

Birowosuto, M. Danang; Dorenbos, Pieter; de Haas, Johan; van Eijk, Carel; Krämer, Karl; Güdel, Hans-Ulrich (2007). Thermal-neutron scintillator: Ce3+ activated Rb2LiYBr6. Journal of applied physics, 101(6), p. 66107. Melville, N.Y.: American Institute of Physics 10.1063/1.2713948

Birowosuto, Muhammad; Dorenbos, Pieter; van Eijk, Carel; Krämer, Karl; Güdel, Hans-Ulrich (2007). Scintillation and luminescence properties of Ce3+ doped ternary cesium rare-earth halides. Physica status solidi. A - applications and materials science, 204(3), pp. 850-860. Weinheim: Wiley-VCH 10.1002/pssa.200622459

Braun, Hans-Benjamin; Kulda, Jiri; Roessli, Bertrand; Visser, Dirk; Krämer, Karl; Güdel, Hans-Ulrich; Böni, Peter (2007). Chiral quantum excitations in the anisotropic antiferromagnet CsCoBr3. Journal of Magnetism and Magnetic Materials, 310(2, Part 2), pp. 1194-1196. Amsterdam: North-Holland Publ. Co. 10.1016/j.jmmm.2006.10.307

Grimm, Judith; Fleniken, J; Krämer, Karl; Biner, Daniel; Happek, U; Güdel, Hans-Ulrich (2007). On the determination of photoionization thresholds of Ce3+ doped Cs3LuCl6, Cs2LiLuCl6 and Cs2LiYCl6 by thermoluminescence. Journal of luminescence, 122-123, pp. 325-328. Amsterdam: North-Holland 10.1016/j.jlumin.2006.01.164

Schaniel, Dominik; Imlau, Mirco; Weisemoeller, Thomas; Woike, Theo; Krämer, Karl; Güdel, Hans-Ulrich (2007). Photoinduced Nitrosyl Linkage Isomers Uncover a Variety of Unconventional Photorefractive Media (Communication). Advanced materials, 19(5), pp. 723-726. Weinheim: Wiley-VCH 10.1002/adma.200601378

Grimm, Judith; Wenger, Oliver; Krämer, Karl; Güdel, Hans-Ulrich (2007). 4f 4f and 4f 5d excited states and luminescence properties of Tm2+- doped CaF2, CaCl2, SrCl2 and BaCl2. Journal of luminescence, 126(2), pp. 590-596. Amsterdam: North-Holland 10.1016/j.jlumin.2006.10.007

Schaniel, Dominik; Benoit, Cormary; Malfant, Isabelle; Valade, Lydie; Woike, Theo; Delley, Bernard; Krämer, Karl W.; Güdel, Hans-Ulrich (2007). Photogeneration of two metastable NO linkage isomers with high populations of up to 76% in trans-[RuCl(py)4(NO)][PF6]2 1/2H2O. Physical Chemistry Chemical Physics, 9(28), pp. 3717-3724. Cambridge: Royal Society of Chemistry 10.1039/b704778a

Birowosuto, Muhammad; Dorenbos, Pieter; van Eijk, Carel; Krämer, Karl; Güdel, Hans-Ulrich (2007). Thermal quenching of Ce3+ emission in PrX3 (X = Cl, Br) by intervalence charge transfer. Journal of Physics: Condensed Matter, 19(25), p. 256209. Bristol: Institute of Physics Publishing IOP 10.1088/0953-8984/19/25/256209

Schaniel, Dominik; Woike, Theo; Delley, Bernard; Biner, Daniel; Krämer, Karl; Güdel, Hans-Ulrich (2007). Generation of one light-induced metastable nitrosyl linkage isomer in [Pt(NH3)4Cl(NO)]Cl2 in the red spectral range. Physical Chemistry Chemical Physics, 9(37), pp. 5149-5157. Cambridge: Royal Society of Chemistry 10.1039/b707912e

Couderc, Gaëtan; Hertzsch, Tino; Behrnd, Norwid-Rasmus; Krämer, Karl; Hulliger, Jürg (2006). Reversible sorption of nitrogen and xenon gas by the guest-free zeolite tris(o-phenylenedioxy)cyclotriphosphazene (TPP). Microporous and mesoporous materials, 88(1-3), pp. 170-175. Amsterdam: Elsevier 10.1016/j.micromeso.2005.08.036

Suyver, J. Freek; Grimm, Judith; van Veen, Marieke; Biner, Daniel; Krämer, Karl; Güdel, Hans-Ulrich (2006). Upconversion spectroscopy and properties of NaYF4 doped with Er3+, Tm3+ and/or Yb3+. Journal of luminescence, 117(1), pp. 1-12. Amsterdam: North-Holland 10.1016/j.jlumin.2005.03.011

Dorenbos, Pieter; van Loef, E; Vink, A; van der Kolk, E; van Eijk, C; Krämer, Karl; Güdel, Hans-Ulrich; Higgins, W; Shah, K (2006). Level location and spectroscopy of Ce3+, Pr3+, Er3+, and Eu2+ in LaBr3. Journal of luminescence, 117(2), pp. 147-155. Amsterdam: North-Holland 10.1016/j.jlumin.2005.04.016

Bessière, Aurélie; Dorenbos, Pieter; van Eijk, Wilhelm; Krämer, Karl; Güdel, Hans-Ulrich; Galtayries, Anouk (2006). Scintillation and anomalous emission in elpasolite Cs2LiLuCl6:Ce3+. Journal of luminescence, 117(2), pp. 187-198. Amsterdam: North-Holland 10.1016/j.jlumin.2005.05.005

Birowosuto, M. Danang; Dorenbos, Pieter; de Haas, Johan; van Eijk, Carel; Krämer, Karl; Güdel, Hans-Ulrich (2006). Optical spectroscopy and luminescence quenching of LuI3:Ce3+. Journal of luminescence, 118(2), pp. 308-316. Amsterdam: North-Holland 10.1016/j.jlumin.2005.09.001

Aebischer, Annina; Hostettler, Marc; Hauser, Jürg; Krämer, Karl; Weber, Thomas; Güdel, Hans-Ulrich; Bürgi, Hans-Beat (2006). Structural and Spectroscopic Characterization of Active Sites in a Family of Light-Emitting Sodium Lanthanide Tetrafluorides. Angewandte Chemie (International ed.), 45(17), pp. 2802-2806. Weinheim: Wiley-VCH 10.1002/anie.200503966

Schaniel, Dominik; Woike, Theo; Schefer, Jürg; Petrícek, Vaclav; Krämer, Karl; Güdel, Hans-Ulrich (2006). Neutron diffraction shows a photoinduced isonitrosyl linkage isomer in the metastable state SI of Na2[Fe(CN)5NO] 2D2O. Physical review. B - condensed matter and materials physics, 73(17), p. 174108. Ridge, N.Y.: American Physical Society 10.1103/PhysRevB.73.174108

Krämer, Karl; Dorenbos, Pieter; Güdel, Hans-Ulrich; van Eijk, Eduard (2006). Development and characterization of highly efficient new cerium doped rare earth halide scintillator materials. Journal of materials chemistry, 16(27), pp. 2773-2780. Cambridge: Royal Society of Chemistry 10.1039/b602762h

Birowosuto, M. Danang; Dorenbos, Pieter; van Eijk, Carel; Krämer, Karl; Güdel, Hans-Ulrich (2006). High-light-output scintillator for photodiode readout: LuI3:Ce3+. Journal of applied physics, 99(12), p. 123520. Melville, N.Y.: American Institute of Physics 10.1063/1.2207689

Birowosuto, Muhammad; Dorenbos, Pieter; van Eijk, Carel; Krämer, Karl; Güdel, Hans-Ulrich (2006). Scintillation properties and anomalous Ce3+ emission of Cs2NaREBr6:Ce3+ (RE = La,Y,Lu). Journal of Physics: Condensed Matter, 18(26), 6133 6148. Bristol: Institute of Physics Publishing IOP 10.1088/0953-8984/18/26/031

Birowosuto, M. Danang; Dorenbos, Pieter; van Eijk, Carel; Krämer, Karl; Güdel, Hans-Ulrich (2006). PrBr3: Ce3+: A New Fast Lanthanide Trihalide Scintillator. IEEE transactions on nuclear science, 53(5), pp. 3028-3030. New York, N.Y.: Professional Technical Group on Nuclear Science, Institute of Electrical and Electronics Engineers IEEE 10.1109/TNS.2006.880969

Rüegg, Ch.; Normand, B.; Matsumoto, M.; Niedermayer, Ch.; Furrer, A.; Krämer, Karl; Güdel, Hans-Ulrich; Bourges, Ph.; Sidis, Y.; Mutka, H. (2005). Quantum Statistics of Interacting Dimer Spin Systems. Physical review letters, 95(26) American Physical Society 10.1103/PhysRevLett.95.267201

Suyver, J.F.; Aebischer, A.; Biner, Daniel; Gerner, P.; Grimm, J.; Heer, S.; Krämer, Karl; Reinhard, C.; Güdel, Hans-Ulrich (2005). Novel materials doped with trivalent lanthanides and transition metal ions showing near-infrared to visible photon upconversion. Optical materials, 27(6), pp. 1111-1130. North-Holland 10.1016/j.optmat.2004.10.021

Bessiere, A.; Dorenbos, P.; van Eijk, C.W.E.; Krämer, Karl; Güdel, Hans-Ulrich; de Mello Donega, C.; Meijerink, A. (2005). Luminescence and scintillation properties of the small band gap compound LaI3:Ce3+. Nuclear instruments & methods in physics research. Section A - accelerators, spectrometers, detectors and associated equipment, 537(1-2), pp. 22-26. North-Holland 10.1016/j.nima.2004.07.224

Bessiere, A.; Dorenbos, P.; E. van Eijk, C.W.; Krämer, Karl; Güdel, Hans-Ulrich (2005). Luminescence and scintillation properties of CS2LiYCl6:Ce3+ for γ and neutron detection. Nuclear instruments & methods in physics research. Section A - accelerators, spectrometers, detectors and associated equipment, 537(1-2), pp. 242-246. North-Holland 10.1016/j.nima.2004.08.018

Schaniel, Dominik; Woike, Theo; Delley, Bernard; Boskovic, Colette; Biner, Daniel; Krämer, Karl; Güdel, Hans-Ulrich (2005). Long-lived light-induced metastable states in trans-[Ru(NH3)4(H2O)NO]Cl3·H2O and related compounds. Physical Chemistry Chemical Physics, 7(6), p. 1164. Royal Society of Chemistry 10.1039/b415435e

Suyver, J.F.; Grimm, J.; Krämer, Karl; Güdel, Hans-Ulrich (2005). Highly efficient near-infrared to visible up-conversion process in. Journal of luminescence, 114(1), pp. 53-59. North-Holland 10.1016/j.jlumin.2004.11.012

Braun, Hans-Benjamin; Kulda, Jiri; Roessli, Bertrand; Visser, Dirk; Krämer, Karl; Güdel, Hans-Ulrich; Böni, Peter (2005). Emergence of soliton chirality in a quantum antiferromagnet. Nature physics, 1(3), pp. 159-163. Nature Publishing Group 10.1038/nphys152

Shalav, A.; Richards, B. S.; Trupke, T.; Krämer, Karl; Güdel, Hans-Ulrich (2005). Application of NaYF[sub 4]:Er[sup 3+] up-converting phosphors for enhanced near-infrared silicon solar cell response. Applied physics letters, 86(1), 013505. American Institute of Physics 10.1063/1.1844592

Krämer, Karl; Biner, Daniel; Frei, Gabriela Claudia; Güdel, Hans-Ulrich; Hehlen, Markus P.; Lüthi, Stefan R. (2004). Hexagonal Sodium Yttrium Fluoride Based Green and Blue Emitting Upconversion Phosphors. Chemistry of materials, 16(7), pp. 1244-1251. American Chemical Society 10.1021/cm031124o

Franz, Patrick; Ambrus, Christina; Hauser, Andreas; Chernyshov, Dmitry; Hostettler, Marc; Hauser, Jürg; Keller, Lukas; Krämer, Karl; Stoeckli-Evans, Helen; Pattison, Philip; Bürgi, Hans-Beat; Decurtins, Silvio (2004). Crystalline, Mixed-Valence Manganese Analogue of Prussian Blue: Magnetic, Spectroscopic, X-ray and Neutron Diffraction Studies. Journal of the American Chemical Society, 126(50), pp. 16472-16477. American Chemical Society 10.1021/ja0465451

Reinhard, Christine; Krämer, Karl; Biner, Daniel; Güdel, Hans-Ulrich (2004). V3+ sensitized upconversion in Cs2NaScCl6:Pr3+;V3+ and K2NaScF6:Er3+;V3+. Journal of Alloys and Compounds, 374(1-2), pp. 133-136. Elsevier 10.1016/j.jallcom.2003.11.068

Rüegg, Ch; Cavadini, N; Furrer, A; Krämer, Karl; Güdel, Hans-Ulrich; Vorderwisch, P; Habicht, K; Mutka, H; Wildes, A (2004). Spin dynamics in the BEC phase of the S=1/2 quantum spin system TlCuCl3. Journal of Magnetism and Magnetic Materials, 272-276, pp. 195-196. North-Holland Publ. Co. 10.1016/j.jmmm.2003.11.075

Bessière, A; Dorenbos, P; Eijk, C W E van; Pidol, L; Krämer, Karl; Güdel, Hans-Ulrich (2004). Spectroscopy and anomalous emission of Ce doped elpasolite Cs 2 LiY Cl 6. Journal of Physics: Condensed Matter, 16(10), pp. 1887-1897. Institute of Physics Publishing IOP 10.1088/0953-8984/16/10/019

Rüegg, Ch.; Furrer, A.; Sheptyakov, D.; Strässle, Th.; Krämer, Karl; Güdel, Hans-Ulrich; Mélési, L. (2004). Pressure-Induced Quantum Phase Transition in the Spin-Liquid T l C u C l 3. Physical review letters, 93(25) American Physical Society 10.1103/PhysRevLett.93.257201

Strässle, Th.; Juranyi, F.; Schneider, M.; Janssen, S.; Furrer, A.; Krämer, Karl; Güdel, Hans-Ulrich (2004). Origin of Higher Order Magnetic Exchange: Evidence for Local Dimer Exchange Striction in CsMn 0.28 Mg 0.72 Br 3 Probed by Inelastic Neutron Scattering. Physical review letters, 92(25), p. 257202. American Physical Society 10.1103/PhysRevLett.92.257202

Bessiere, A.; Dorenbos, P.; van Eijk, C.W.E.; Krämer, Karl; Güdel, Hans-Ulrich (2004). New thermal neutron scintillators: Cs2LiYCl6 : Ce3+ and Cs2LiYBr6 : Ce3+. IEEE transactions on nuclear science, 51(5), pp. 2970-2972. Professional Technical Group on Nuclear Science, Institute of Electrical and Electronics Engineers IEEE 10.1109/TNS.2004.834957

Rüegg, Ch.; Oettli, M.; Schefer, J.; Zaharko, O.; Furrer, A.; Tanaka, H.; Krämer, Karl; Güdel, Hans-Ulrich; Vorderwisch, P.; Habicht, K.; Polinski, T.; Meissner, M. (2004). Neutron Scattering Study of the Field-Dependent Ground State and the Spin Dynamics in Spin-One-Half N H 4 C u C l 3. Physical review letters, 93(3), 037207. American Physical Society 10.1103/PhysRevLett.93.037207

Reinhard, Christine; Krämer, Karl; Biner, Daniel; Güdel, Hans-Ulrich (2004). Cooperative radiative and nonradiative effects in K[sub 2]NaScF[sub 6] codoped with V[sup 3+] and Er[sup 3+]. The Journal of Chemical Physics, 120(7), p. 3374. American Institute of Physics 10.1063/1.1640335

van Loef, E.V.D; Dorenbos, P; van Eijk, C.W.E; Krämer, Karl; Güdel, Hans-Ulrich (2003). Properties and mechanism of scintillation in LuCl3:Ce3+ and LuBr3:Ce3+ crystals. Nuclear instruments & methods in physics research. Section A - accelerators, spectrometers, detectors and associated equipment, 496(1), pp. 138-145. North-Holland 10.1016/S0168-9002(02)01634-0

Cavadini, N.; Andreica, D.; Gygax, F.N.; Schenck, A.; Krämer, Karl; Güdel, Hans-Ulrich; Mutka, H.; Wildes, A. (2003). Local spin susceptibility in KCuCl3. Physica B-Condensed Matter, 335(1-4), pp. 37-40. Elsevier 10.1016/S0921-4526(03)00186-8

van Loef, E. V. D.; Dorenbos, P.; van Eijk, C. W. E.; Krämer, Karl; Güdel, Hans-Ulrich (2003). Influence of the anion on the spectroscopy and scintillation mechanism in pure and Ce 3 + -doped K 2 La X 5 and La X 3 ( X = Cl , Br, I). Physical Review B, 68(4), 045108. American Institute of Physics 10.1103/PhysRevB.68.045108

Gerner, Pascal; Krämer, Karl; Güdel, Hans-Ulrich (2003). Broad-band Cr5+-sensitized Er3+ luminescence in YVO4. Journal of luminescence, 102-103, pp. 112-118. North-Holland 10.1016/S0022-2313(02)00476-3

Rüegg, Ch.; Cavadini, N.; Furrer, A.; Güdel, Hans-Ulrich; Krämer, Karl; Mutka, H.; Wildes, A.; Habicht, K.; Vorderwisch, P. (2003). Bose–Einstein condensation of the triplet states in the magnetic insulator TlCuCl3. Nature, 423(6935), pp. 62-65. Macmillan Journals Ltd. 10.1038/nature01617

Dorenbos, P.; van Loef, E.V.D.; van Eijk, C.W.E.; Krämer, Karl; Güdel, Hans-Ulrich (2003). Anomalous 10-ns emission in Ce 3 + -doped Cs 3 LuCl 6. Physical Review B, 68(12) American Institute of Physics 10.1103/PhysRevB.68.125108

Cavadini, N.; Rüegg, Ch.; Furrer, A.; Güdel, Hans-Ulrich; Krämer, Karl; Mutka, H.; Vorderwisch, P. (2002). Triplet excitations in low- H c spin-gap systems KCuCl 3 and TlCuCl 3 : An inelastic neutron scattering study. Physical Review B, 65(13), p. 132415. American Institute of Physics 10.1103/PhysRevB.65.132415

Rüegg, Ch.; Cavadini, N.; Furrer, A.; Krämer, Karl; Güdel, Hans-Ulrich; Vorderwisch, P.; Mutka, H. (2002). Spin dynamics in the high-field phase of quantum-critical S =1/2 TlCuCl 3. Applied physics. A, Materials science & processing, 74, s840-s842. Springer-Verlag Heidelberg 10.1007/s003390101156

Heer, S.; Wermuth, M.; Krämer, Karl; Güdel, Hans-Ulrich (2002). Sharp 2 E upconversion luminescence of Cr 3 + in Y 3 Ga 5 O 12 codoped with Cr 3 + and Yb 3 +. Physical Review B, 65(12), p. 125112. American Institute of Physics 10.1103/PhysRevB.65.125112

van Loef, E.V.D; Dorenbos, P; van Eijk, C.W.E; Krämer, Karl; Güdel, Hans-Ulrich (2002). Scintillation properties of LaBr3:Ce3+ crystals: fast, efficient and high-energy-resolution scintillators. Nuclear instruments & methods in physics research. Section A - accelerators, spectrometers, detectors and associated equipment, 486(1-2), pp. 254-258. North-Holland 10.1016/S0168-9002(02)00712-X

Allier, C.P; van Loef, E.V.D; Dorenbos, P; Hollander, R.W; van Eijk, C.W.E; Krämer, Karl; Güdel, Hans-Ulrich (2002). Readout of a LaCl3(Ce3+) scintillation crystal with a large area avalanche photodiode. Nuclear instruments & methods in physics research. Section A - accelerators, spectrometers, detectors and associated equipment, 485(3), pp. 547-550. North-Holland 10.1016/S0168-9002(01)02145-3

CAVADINI, N.; RüEGG, CH.; FURRER, A.; Güdel, Hans-Ulrich; Krämer, Karl; MUTKA, H.; WILDES, A.; HABICHT, K.; VORDERWISCH, P. (2002). TRIPLET MODES IN A QUANTUM SPIN LIQUID ACROSS THE CRITICAL FIELD. International Journal of Modern Physics B, 16(20n22), pp. 3302-3305. World Scientific 10.1142/S0217979202014243

Krämer, Karl; Güdel, Hans-Ulrich; Fischer, P.; Keller, L. (2002). Magnetic order in CeI 2. Applied physics. A, Materials science & processing, 74, s595-s597. Springer-Verlag Heidelberg 10.1007/s003390101124

Mackay Salley, G.; Wenger, Oliver S.; Krämer, Karl; Güdel, Hans-Ulrich (2002). Inorganic solid state optical materials: Major recent advances. Current opinion in solid state & materials science, 6(6), pp. 487-493. Current Science Ltd. 10.1016/S1359-0286(02)00024-4

Cavadini, N.; Heigold, G.; Henggeler, W.; Furrer, A.; Güdel, Hans-Ulrich; Krämer, Karl; Mutka, H. (2001). Magnetic excitations in the quantum spin system TlCuCl 3. Physical Review B, 63(17) American Institute of Physics 10.1103/PhysRevB.63.172414

van Loef, E. V. D.; Dorenbos, P.; van Eijk, C. W. E.; Krämer, Karl; Güdel, Hans-Ulrich (2001). High-energy-resolution scintillator: Ce[sup 3+] activated LaBr[sub 3]. Applied physics letters, 79(10), p. 1573. American Institute of Physics 10.1063/1.1385342

van Eijk, C.W.E.; Dorenbos, P.; van Loef, E.V.D.; Krämer, Karl; Güdel, Hans-Ulrich (2001). Energy resolution of some new inorganic-scintillator gamma-ray detectors. Radiation measurements, 33(5), pp. 521-525. Pergamon 10.1016/S1350-4487(01)00045-2

Schaniel, D.; Allenspach, P.; Furrer, A.; Krämer, Karl; Güdel, Hans-Ulrich (2001). Dimer splitting of Er3+ in Cs3Er2Br9. Journal of Alloys and Compounds, 323-324, pp. 481-485. Elsevier 10.1016/S0925-8388(01)01044-1

Krämer, Karl; Schenker, Ralph; Hauser, Jürg; Weihe, Høgni; Güdel, Hans-Ulrich; Bürgi, Hans-Beat (2001). Crystal Structures of (Et4N)3M2F9 (M = V, Cr, Fe) determined by X-Ray Single-Crystal and Powder Diffraction: A New Structure Type for A3M2X9 Compounds. Zeitschrift für anorganische und allgemeine Chemie, 627(11), pp. 2511-2516. Wiley-VCH 10.1002/1521-3749(200111)627:11<2511::AID-ZAAC2511>3.0.CO;2-J

Wenger, Oliver S.; Wickleder, Claudia; Krämer, Karl; Güdel, Hans-Ulrich (2001). Upconversion in a divalent rare earth ion: optical absorption and luminescence spectroscopy of Tm2+ doped SrCl2. Journal of luminescence, 94-95, pp. 101-105. North-Holland 10.1016/S0022-2313(01)00255-1

Heer, S.; Wermuth, M.; Krämer, Karl; Güdel, Hans-Ulrich (2001). Upconversion excitation of Cr3+2E emission in Y3Ga5O12 codoped with Cr3+ and Yb3+. Chemical physics letters, 334(4-6), pp. 293-297. North-Holland 10.1016/S0009-2614(00)01444-5

Heer, S.; Wermuth, M.; Krämer, Karl; Ehrentraut, D.; Güdel, Hans-Ulrich (2001). Up-conversion excitation of sharp Cr3+ 2E emission in YGG and YAG codoped with Cr3+ and Yb3+. Journal of luminescence, 94-95, pp. 337-341. North-Holland 10.1016/S0022-2313(01)00395-7

van Loef, E.V.D.; Dorenbos, L.P.; van Eijk, C.W.E.; Krämer, Karl; Güdel, Hans-Ulrich (2001). Scintillation properties of LaCl/sub 3/:Ce/sup 3+/ crystals: fast, efficient, and high-energy resolution scintillators. IEEE transactions on nuclear science, 48(3), pp. 341-345. Professional Technical Group on Nuclear Science, Institute of Electrical and Electronics Engineers IEEE 10.1109/23.940077

van Loef, E.V.D.; Dorenbos, P.; van Eijk, C.W.E.; Krämer, Karl; Güdel, Hans-Ulrich (2001). Optical and scintillation properties of pure and Ce3+ doped GdBr3. Optics communications, 189(4-6), pp. 297-304. Elsevier 10.1016/S0030-4018(01)01039-2

Krämer, Karl; Güdel, Hans-Ulrich; Fischer, P.; Fauth, F.; Fernandez-Diaz, M.T.; Hauß, T. (2000). Triangular antiferromagnetic order in the honeycomb layer lattice of. European physical journal. B - condensed matter and complex systems, 18(1), pp. 39-47. EDP Sciences 10.1007/s100510070075

Cavadini, N.; Rüegg, Ch.; Henggeler, Wolfgang; Furrer, A.; Güdel, Hans-Ulrich; Krämer, Karl; Mutka, H. (2000). Temperature renormalization of the magnetic excitations in S = 1/2 KCuCl3. European physical journal. B - condensed matter and complex systems, 18(4), pp. 565-571. EDP Sciences 10.1007/s100510070003

Cavadini, N; Heigold, G; Henggeler, Wolfgang; Furrer, Anja Christina; Güdel, Hans-Ulrich; Krämer, Karl; Mutka, H (2000). Quantum magnetic interactions in S = 1/2 KCuCl 3. Journal of Physics: Condensed Matter, 12(25), pp. 5463-5472. Institute of Physics Publishing IOP 10.1088/0953-8984/12/25/310

Andreica, D.; Cavadini, N.; Güdel, Hans-Ulrich; Gygax, F.N.; Krämer, Karl; Pinkpank, M.; Schenck, A. (2000). Muon-induced break up of spin-singlet pairs in the double-chain compound KCuCl3. Physica B-Condensed Matter, 289-290, pp. 176-180. Elsevier 10.1016/S0921-4526(00)00355-0

Krämer, Karl; Güdel, Hans-Ulrich; Roessli, B; Fischer, P; Dönni, A; Wada, N; Fauth, F; Fernandez-Diaz, M.T; Hauss, T (2000). Magnetic ordering in the erbium honeycomb lattices of ErX3 (X=Cl, Br, I). Physica B-Condensed Matter, 276-278, pp. 674-675. Elsevier 10.1016/S0921-4526(99)01724-X

Cavadini, N; Henggeler, W; Furrer, A; Güdel, Hans-Ulrich; Krämer, Karl; Mutka, H (2000). Magnetic excitations and spin gap in KCuCl3. Physica B-Condensed Matter, 276-278, pp. 540-542. Elsevier 10.1016/S0921-4526(99)01747-0

Burlot-Loison, R.; Pollnau, M.; Krämer, Karl; Egger, P.; Hulliger, Jürg; Güdel, Hans-Ulrich (2000). Laser-relevant spectroscopy and upconversion mechanisms of Er3+ in Ba2YCl7 pumped at 800 nm. Journal of the Optical Society of America. B - optical physics, 17(12), pp. 2055-2067. Optical Society of America 10.1364/JOSAB.17.002055

van Loef, E. V. D.; Dorenbos, P.; van Eijk, C. W. E.; Krämer, Karl; Güdel, Hans-Ulrich (2000). High-energy-resolution scintillator: Ce[sup 3+] activated LaCl[sub 3]. Applied physics letters, 77(10), pp. 1467-1468. American Institute of Physics 10.1063/1.1308053

Schaniel, D; Allenspach, P; Furrer, A; Krämer, Karl; Güdel, Hans-Ulrich (2000). Dimer splitting of Er3+ in Cs3Er2X9 (X=Cl,Br): mystery solved. Physica B-Condensed Matter, 276-278, pp. 690-691. Elsevier 10.1016/S0921-4526(99)01802-5

Andres, H. P.; Krämer, Karl; Güdel, Hans-Ulrich (1996). Optical absorption and luminescence spectroscopy of U 3 + in K 2 La X 5 ( X =Cl,Br,I). Physical Review B, 54(6), pp. 3830-3840. American Institute of Physics 10.1103/PhysRevB.54.3830

Pollnau, M.; Lüthy, Willy; Weber, Heinz; Krämer, Karl; Güdel, Hans-Ulrich; McFarlane, R. A. (1996). Excited-state absorption in Er: BaY2F8 and Cs3Er2Br9 and comparison with Er: LiYF4. Applied physics. B, Lasers and optics, 62(4), pp. 339-344. Springer 10.1007/BF01081195

Conference or Workshop Item

Tessitore, Gabriella; Mudring, A.V.; Krämer, Karl (16 November 2017). Room temperature synthesis and luminescence of β-NaGdF4: Eu3+, Er3+, and Yb3+, Er3+ nanocrystals (Unpublished). In: Shift2017, Spectral shaping for biomedical and energy applications. Costa Adeje, Teneriffa. 13.-17.11.2017.

Tessitore, Gabriella; Mudring, A.V.; Krämer, Karl (22 August 2017). Improved upconversion luminescence in β-NaGdF4: Er3+, Yb3+ nanoparticles: A new microwave-assisted synthesis in anhydrous ionic liquids. CHIMIA, 71(7-8), IC168-IC168. Schweizerische Chemische Gesellschaft

Xiao, Fan; Krämer, Karl; Rüegg, Ch. (22 August 2017). An experimental approach to solve the single-band Hubbard model in new fluorides. CHIMIA, 71(7-8), IC178-IC178. Schweizerische Chemische Gesellschaft

Tessitore, Gabriella; Mudring, Anja-Verena; Krämer, Karl (23 August 2016). Room temperature synthesis of β-NaGdF4:RE3+ (RE = Eu, Er) nanocrystallites and their luminescence. In: 6th Interantional Conference on Excited States of Transition Elements (ESTE). Polanica Zdroj, Poland. 21.-26.08.2016.

Villanueva Delgado, Pedro; Krämer, Karl; Valiente, Rafael (22 August 2016). Energy transfer and upconversion in Tm3+-doped β-NaYF4: comparison between models and theory (Unpublished). In: 6th Interantional Conference on Excited States of Transition Elements (ESTE). Polanica Zdroj, Poland. 21.-26.08.2016.

Krämer, Karl (22 August 2016). Resonance in Upconversion Excitation (Unpublished). In: 6th International Conference on Excited States of Transition Elements (ESTE). Polanica-Zdroj, Poland. 21.-26.08.2016.

Villanueva Delgado, Pedro; Krämer, Karl; Valiente, Rafael (18 July 2016). Modelling Blue to UV Upconversion in β-NaYF4: 0.3% Tm3+. 19th International Conference on Dynamical Processes in Excited States of Solids. Book of Abstracts, p. 75.

Lanza, Arianna; Scatena, Rebecca; Rezende dos Santos, Leonardo Humberto; Kubus, Mariusz; Krämer, Karl; Keller, Lukas; Fennell, Tom; Wehinger, Björn; Biffin, Alun; Rüegg, Christian; Casati, Nicola; Macchi, Piero (2016). Copper-pyrazine magnetic polymers under high pressure. Acta Crystallographica Section A Foundations and Advances, 72(a1), s88. International Union of Crystallography 10.1107/S2053273316098697

Scatena, Rebecca; Rezende dos Santos, Leonardo Humberto; Lanza, Arianna; Casati, Nicola; Wehinger, Björn; Rüegg, Christian; Kubus, Mariusz; Krämer, Karl; Keller, Lukas; Fennell, Tom; Biffin, Alun; Macchi, Piero (2016). Electron density analysis in quantum magnets. Acta Crystallographica Section A Foundations and Advances, 72(a1), s313-s313. International Union of Crystallography 10.1107/S2053273316095309

Kubus, Mariusz; Lanza, Arianna; Casati, Nicola; Macchi, Piero; Keller, Lukas; Fiolka, Christoph; Schefer, Jürg; Rüegg, Christian; Krämer, Karl (2016). New antiferromagnets [CuX(pyz) 2 ](BF 4 ) with X = Cl and Br. Acta Crystallographica Section A Foundations and Advances, 72(a1), s92. International Union of Crystallography 10.1107/S2053273316098648

Fischer, S.; Fröhlich, B.; Ivaturi, A.; Herter, B.; Wolf, S.; Krämer, Karl; Richards, B. S.; Goldschmidt, J. C. (2014). Upconverter materials and upconversion solar-cell devices: simulation and characterization with broad solar spectrum illumination. In: Physics, Simulation, and Photonic Engineering of Photovoltaic Devices III. Proceedings of SPIE: Vol. 8981 (89810B). SPIE 10.1117/12.2039407

Fischer, S.; Steinkemper, H.; Krämer, Karl; Goldschmidt, J.C. (2012). Concepts to enhance the efficiency of upconversion for solar applications. In: Wehrspohn, Ralf; Gombert, Andreas (eds.) Photonics for Solar Energy Systems IV. Proceedings of SPIE: Vol. 8438 (p. 843806). Bellingham: SPIE 10.1117/12.922183

Goldschmidt, J.C.; Fischer, S.; Steinkemper, H.; Herter, B.; Rist, T.; Wolf, S.; Bläsi, B.; Hallermann, F.; von Plessen, G.; Krämer, K.W.; Biner, D.; Hermle, M. (2012). Increasing upconversion by metal and dielectric nanostructures. In: Freundlich, Alexandre; Guillemoles, Jean-Francois F. (eds.) Physics, Simulation, and Photonic Engineering of Photovoltaic Devices. Proceedings of SPIE: Vol. 8256 (p. 825602). Bellingham: SPIE 10.1117/12.910915

Nguyen, H.; Odermatt, Jan; Grimaudo, Valentine; Krämer, Karl; Broekmann, Peter (2012). Electrochemical oscillation in the additives-assisted copper electroplating: a mechanistic study on the role of intermediate species at the copper/electrolyte interface. Book of Abstracts(P2.070), p. 469.

Goldschmidt, J.C.; Fischer, S.; Löper, P.; Krämer, K.W.; Biner, D.; Hermle, M.; Glunz, S.W. (2010). Upconversion to enhance silicon solr cell efficiency - detailed experimental analysis with both coherent monochromatic irradiation and white light illumination. In: Proceedings of the 25th Eur. Photovoltaic Solar Energy Conf. and 5th World Conf. on Photovoltaic Energy Conversion, 09/2010, Valencia, Spain.

Fischer, S.; Goldschmidt, J.C.; Krämer, K.W.; Biner, D.; Hermle, M.; Glunz, S.W. (2010). Calibrated photoluminiszence of the upconverter NaYF4:20% Er3+ for silicon solar cells. In: Proceedings of the 25th Eur. Photovoltaic Solar Energy Conf. and 5th World Conf. on Photovoltaic Energy Conversion, 09/2010, Valencia, Spain.

Goldschmidt, J.C.; Loper, P.; Fischer, S.; Janz, S.; Peters, M.; Glunz, S.W.; Willeke, G.; Lifshitz, E.; Krämer, Karl; Biner, Daniel (2009). Advanced upconverter systems with spectral and geometric concentration for high upconversion efficiencies. Proceedings of the IUMRS International Conference on Electronic Materials Commad 2008(28.7.-1.8.08), pp. 307-311. 10.1109/COMMAD.2008.4802153

Löper, P.; Goldschmidt, J.C.; Fischer, S.; Peters, M.; Meijerink, A.; Biner, Daniel; Krämer, Karl; Schultz-Wittmann, O.; Glunz, S.W.; Luther, J. (2009). Upconversion for silicon solar cells: Material and system characterization. European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC), pp. 173-180. 10.4229/23rdEUPVSEC2008-1CO.3.1

Fischer, S.; Goldschmidt, J.C.; Löper, P.; Janz, S.; Peters, M.; Glunz, S.W.; Kigel, A.; Lifshitz, E.; Krämer, Karl; Biner, Daniel; Bauer, G.H.; Brüggemann, R. (2009). Material characterization for advanced upconverter systems. European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC), pp. 620-623. 10.4229/23rdEUPVSEC2008-1CV.2.68

Krämer, Karl; Keller, Lukas (2007). High temperature phase and thermal expansion of PrBr3. Referat am Kongress XX. Tage der Seltenen Erden - Terrae Rarae 2007.

Krämer, Karl (2007). Thermal expansion and high temperature phase of PrBr3. In: 4th European Conference on Neutron Scattering, 25-29 June 2007, Lund, Sweden. European Neutron Scattering Association

Löper, Philipp; Goldschmidt, Jan; Peters, Marius; Biner, Daniel; Krämer, Karl; Schultz, O; Glunz, S.W.; Luther, J (2007). Efficient upconversion systems for silicon solar cells. In: Proceeding of the 22nd European Photovoltaic Solar Energy Conference, 3.-7.9.2007, Milan (pp. 589-594). Verlag fehlt

Shalav, Avi; Richards, Bryce; Krämer, Karl; Conibeer, Gavin; Green, Martin (2007). Two colour excitation up-conversion efficiency enhancement for a silicon photovoltaic device using Er3+-doped phosphors. In: Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, Vol. 1 (pp. 45-48). Verlag fehlt 10.1109/WCPEC.2006.279342

Thesis

Tessitore, Gabriella (2017). NEW SYNTHESES OF LUMINESCENT MATERIALS FROM IONIC LIQUIDS. (Dissertation, Departement für Chemie und Biochemie (DCB), Philosophisch-naturwissenschaftlichen Fakultät)

Villanueva Delgado, Pedro (2016). UPCONVERSION IN beta-NaYF4: Yb3+, Tm3+: SYNTHESIS, EXPERIMENTS, AND MODELS. (Dissertation, Departement für Chemie und Biochemie, Science)

Hänni, Nora (2016). Structural and Magnetic Properties of Low-Dimensional Ternary Chlorides. (Dissertation, Departement für Chemie und Biochemie, Philosophisch-naturwissenschaftliche Fakultät, Universität Bern)

Patent

Stichting Voor De Technische Wetenschappen, Neth.; Saint-Gobain Ceramics & Plastics, Inc.; Universite De Berne. (2014). Scintillation crystal including a rare earth halide, and a radiation detection apparatus including the scintillation crystal. (WO2014066900A1)

Stichting voor de technische Wetenschappen, Universite de Berne (2010). Scintillator based on lanthanum iodide and lanthanum bromide (US100224798)

Stichting voor de technische Wetenschappen, Universite de Berne (2007). High light yield fast scintillator (WO07031583)

Stichting voor de technische Wetenschappen, Universite de Berne (2005). Bright and fast neutron scintillators (WO05068585)

Stichting voor de technische Wetenschappen (2004). Rare-earth iodide scintillation crystals (WO04109333)

Stichting voor de technische Wetenschappen (2001). Scintillator Crystals, Method for making same, Use thereof (LaCl3:Ce) (WO0160944)

Stichting voor de technische Wetenschappen (2001). Scintillator crystals, method for making same, use thereof (LaBr3:Ce) (WO0160945)

  • Schweizerische Gesellschaft für Neutronenstreuung (SGN)
  • Berner Chemische Gesellschaft (BCG)
  • Gesellschaft Deutscher Chemiker (GDCh)