AN EMISSION AND KINETIC-STUDY OF THE IMPURITY-TRAPPED EXCITON IN CDCL2-PB2+

被引：28

作者：

MOINE, B ^{[1
]}

PEDRINI, C ^{[1
]}

GHIORDANESCU, V ^{[1
]}

机构：

[1] INST PHYS & TECHNOL MAT,BUCHAREST,ROMANIA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 22期

关键词：

D O I：

10.1088/0953-8984/6/22/008

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the spectroscopic properties of Pb2+ in a CdCl2 host crystal. By excitation in the absorption band due to the 1A1g --> 3T1u (P-3(1)) transition, two emission bands are observed. At very low temperature a strong uv luminescence with a very long lifetime (2.5 ms) is detected, As the temperature increases, the lifetime of the uv emission drastically decreases to a few nanoseconds at 100 K, and the uv intensity declines. Meanwhile a strong green fluorescence appears. It is assumed that this emission is of the impurity-trapped exciton type, as in the case of CdCl2:Cu+ and BaF2:Eu2+. A detailed study of the kinetics of both fluorescences is presented.

引用

页码：4093 / 4098

页数：6

共 8 条

[1] ON THE 430-NM EMISSION BAND IN THE NACL-PB++ SYSTEM [J].