THERMAL QUENCHING OF THE EU2+ PHOTOLUMINESCENCE IN KCL AND NACL-CRYSTALS

被引：4
|
作者：
SOKOLSKA, I
MUGENSKI, E
机构：
[1] W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw
来源：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1991年 / 165卷 / 01期
关键词：
D O I：
10.1002/pssb.2221650125
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The photoluminescence spectra, lifetimes, and intensity of emission of Eu2+ are examined for KCl:Eu2+ and NaCl:Eu2+ crystals within the range of 15 to 800 K. The quantum yield of emission related to the dipoles and aggregation products formed up to 400 K is found to be temperature independent. Thermal quenching of the emission related to the aggregation products formed at 425 to 525 K is explained by the two-channel nonradiative de-activation of excited t2g(4f(6)5d) levels.
引用
收藏
页码：287 / 293
页数：7
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