Karl W. Krämer, Hans U. Güdel and Robert N. Schwartz
NIR to VIS upconversion in LaCl₃: 1% Er³⁺
One- and two-color excitations around 1000 and 800 nm
J. Alloys Comp. 275-277, 191-195 (1998)      Abstract                 

H. U. Güdel, T. Brunold, M. Hazenkamp, M. Herren, U. Oetliker and R. Schenker
Luminescence of Transition Metal Ions in Unusual Oxidation States
Electrochem. Soc. Proceedings (Luminescent Materials VI) 97-29, 225-234 (1998)      Abstract           

Ralph P. Schenker, Thomas C. Brunold and Hans U. Güdel
Synthesis and Optical Spectroscopy of MnO₄^2--Doped Crystals of Cs₂CrO₄, SrCrO₄, CsBr and CsI
Inorg. Chem. 37, 918-927 (1998)      Abstract                 

Markus Wermuth, Toni Riedener and Hans U. Güdel
Spectroscopy and upconversion mechanisms of CsCdBr₃:Dy³⁺
Phys. Rev. B 57, 4369-4376 (1998)      Abstract                 

Ard Ellens, Karl Krämer and Hans U. Güdel
Comparison of the electron-phonon coupling strength of U³⁺ and Nd³⁺ in K₂LaCl₅
J. Lumin. 76-77, 548-550 (1998)      Abstract                 

Høgni Weihe and Hans U. Güdel
Magneto-Structural Correlations in Linear and Bent Oxo-Bridged Transition-Metal Dimers: Comparisons, Interpretations, and Predictions of Ground-State Magnetic Properties
J. Am. Chem. Soc. 120, 2870-2879 (1998)      Abstract                 

M. Atanasov, T. C. Brunold, H. U. Güdel and C. Daul
Charge-Transfer Spectra and Bonding in Tetrahedral Mn^VI, Cr^V, and V^IV and Mn^VII, Cr^VI, and V^V Oxo Anions
Inorg. Chem. 37, 4589-4602 (1998)      Abstract                 

D. Reinen, T. C. Brunold, H. U. Güdel and N. D. Yordanov
Die Natur des Farbzentrums im Manganblau
Z. Anorg. Allg. Chem. 624, 438-442 (1998)      Abstract                 

S. R. Lüthi, M. P. Hehlen, T. Riedener and H. U. Güdel
Excited state dynamics and optical bistability in the dimer system Cs₃Lu₂Br₉:Yb³⁺
J. Lumin. 76-77, 447-450 (1998)      Abstract                 

Karel Doclo, David De Corte, Claude Daul and H. U. Güdel
Ground State and Excited State Properties of Hexaamminechromium(III) Ion: A Density Functional Study.
Inorg. Chem. 37, 3842-3847 (1998)      Abstract                 

Stefan R. Lüthi, Hans U. Güdel, M. P. Hehlen and J. R. Quagliano
Electronic energy-level structure, correlation crystal-field effects, and f-f transition intensities of Er³⁺ in Cs₃Lu₂Cl₉
Phys. Rev. B 57, 15229-15241 (1998)      Abstract                 

Philip L. W. Tregenna-Piggott, Mary C. M. O'Brien, Høgni Weihe and Hans U. Güdel
Giant second-order Zeeman effect in titanium(III) doped caesium gallium alum
J. Chem. Phys. 109, 2967-2970 (1998)      Abstract                 

Hanspeter Andres, Michael Aebersold, Hans U. Güdel, Juan M. Clemente, Eugenio Coronado, Herma Büttner, Gordon Kearly and Markus Zolliker
Anisotropic exchange coupling in the Keggin derivative K₈[Co₂(D₂O)(W₁₁O₃₉)] · n D₂O
Chem. Phys. Lett. 289, 224-230 (1998)      Abstract                 

Philipp Müller, Markus Wermuth and Hans U. Güdel
Mechanisms of near-infrared to visible upconversion in CsCdBr₃:Ho³⁺
Chem. Phys. Lett. 290, 105-111 (1998)      Abstract                 

Frederik W. M. Vanhelmont, Melath V. Rajasekharan, Hans U. Güdel, Silvia C. Capelli, Jürg Hauser and Hans-Beat Bürgi
Influence of electron donor and acceptor substituents on the excited state properties of rhenium(I) tetracarbonyl chelate complexes
J. Chem. Soc., Dalton Trans. 2893-2900 (1998)      Abstract                 

Hans. U. Güdel
New Light-Emitting Inorganic Materials
Chimia 52, 561-565 (1998)      Abstract           

Daniel R. Gamelin and Hans U. Güdel
Two-Photon Spectroscopy of d³ Transition Metals: Near-IR-to-Visible Upconversion Luminescence by Re⁴⁺ and Mo³⁺
J. Am. Chem. Soc. 120, 12143-12144 (1998)      Abstract                 

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