Abstracts 2006

Abstract of Publication No. 544

M. D. Birowosuto, P. Dorenbos, J. T. M. de Haas, C. W. E. van Eijk, K. W. Krämer and H. U. Güdel
Optical spectroscopy and luminescence quenching of LuI3:Ce3+
J. Lumin. 118, 308-316 (2006)      Full Text (PDF)      DOI-Link     

Abstract: Optical spectroscopy of LuI3 doped with Ce3+ using ultraviolet and visible light excitation is reported. LuI3 host excitation and emission and 4f5d excitation and emission of Ce3+ are observed. An empirical model based on crystal field splitting was used to estimate the energy of the highest 4f5d excitation band. The crystal field splitting and centroid shift were compared to those of LuCl3:Ce3+ and LuBr3:Ce3+. Temperature dependence of X-ray excited luminescence spectra shows thermal quenching, whereas that of the decay curve of Ce3+ emission excited at the lowest 5d band of Ce3+ does not indicate the presence of quenching of Ce3+ emission for temperature below 625K. The quenching in LuI3:Ce3+ therefore occurs before the 5d Ce3+ emission takes place.

Last modified: 13.12.11 by Gabriela Frei