TEMPERATURE-DEPENDENCE OF PHOTOLUMINESCENCE IN SRSEU2+, SM3+ THIN-FILMS

被引：16
|
作者：
HUA, Z [1 ]
SALAMANCARIBA, L [1 ]
WUTTIG, M [1 ]
SOLTANI, PK [1 ]
机构：
[1] QUANTEX CORP,ROCKVILLE,MD 20850
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1993年 / 10卷 / 08期
关键词：
D O I：
10.1364/JOSAB.10.001464
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Details of photoluminescence spectra of SrS singly and doubly doped with Eu2+ and Sm3+ thin films were obtained at various temperatures between 10 and 300 K. From band broadening and shifting a strong electron-lattice interaction was observed for the Eu2+ ionic transition. The temperature dependence of the emission intensity for different excitation energies in the range 2.84-5 eV leads to the identification of different transition mehanisms, namely, ionic transition and photostimulated ionization. An anomalous emission center was observed at 1.88 eV, which is proposed to be an exciton trapped at the Eu2+-V(Sr) center.
引用
下载
收藏
页码：1464 / 1469
页数：6
相关论文
共 50 条
12345