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Photoluminescence and efficiency of Ce3+ in SrS powders



Advanced Materials for Optics and Electronics 3 (1994), No.1-6, pp.131-136
ISSN: 1057-9257
ISSN: 1099-0712
European Workshop on II-IV Semiconductors <1992, Aachen>
Conference Paper, Journal Article
Fraunhofer HHI ()
cerium; luminescence of inorganic solids; photoluminescence; powders; radiation quenching; radiative lifetimes; strontium compounds; time resolved spectra; site selective spectroscopy; efficiency; srs powders; luminescence efficiency; photoluminescence decay studies; radiative decay time; ce3+; concentration quenching; emission bands; ground state splitting; huang-rhys factor; 5d-4f transition; inhomogeneous broadening; time-resolved spectroscopy; srs:ce

The luminescence efficiency of SrS:Ce powders in the doping range from 0.01 to 1.0 at.% was investigated by photoluminescence decay studies. The radiative decay time of Ce3+ is SrS was determined to be 27 ns. The onset of concentration quenching at concentrations higher than about 0.7 at.% has been obtained. The photoluminescence spectrum of Ce3+ exhibits two emission bands as a consequence of the ground state splitting. The Huang-Rhys factor of the 5d-4f transition was estimated to be about 6. The inhomogeneous broadening of the emission band of samples with higher doping level has been investigated by site-selective and time-resolved spectroscopy.