Study of energy transfer between rare earth ions in CaS host by photoluminescence spectra

Citation
Xl. Sun et al., Study of energy transfer between rare earth ions in CaS host by photoluminescence spectra, J PHYS CH S, 62(4), 2001, pp. 807-810
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
ISSN journal
00223697 → ACNP
Volume
62
Issue
4
Year of publication
2001
Pages
807 - 810
Database
ISI
SICI code
0022-3697(200104)62:4<807:SOETBR>2.0.ZU;2-T
Abstract
When CaS:Sm3+, Eu2+ is excited at 476.5 nm (Ar+), the emission spectra take n at room temperature and at 77 K are different, indicating that there are two competitive energy transfer processes-Sm3+ --> Eu2+ and Eu2+ --> Sm3+ w ith phonon participation. So, the luminescence intensity of Sm3+ increases first, and then decreases as the concentration of Eu2+ is increasing. (C) 2 001 Elsevier Science Ltd. All rights reserved.