ABSORPTION AND LUMINESCENCE OF CR2+(D4) IN II-VI-COMPOUNDS

被引:72
作者
KAMINSKA, M [1 ]
BARANOWSKI, JM [1 ]
UBA, SM [1 ]
VALLIN, JT [1 ]
机构
[1] CHALMERS UNIV TECHNOL,DEPT PHYS,S-40220 GOTHENBURG 5,SWEDEN
来源
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 11期
关键词
D O I
10.1088/0022-3719/12/11/029
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Infrared absorption and luminescence measurements of substitutional Cr 2+(d4) in the II-VI compounds ZnS, ZnSe, ZnTe and CdTe are reported. The experimental results are interpreted in the framework of crystal field theory with spin-orbit coupling and a substantial Jahn-Teller interaction in the 5T2 ground state and a much smaller, but significant, Jahn-Teller interaction in the excited 5E state. With a semiclassical model and a Monte Carlo computing technique convoluted shapes of absorption and luminescence spectra are obtained. The Jahn-Teller energy for the 5T2 ground state is found to be approximately 350 cm -1. For the first time a Jahn-Teller energy for the excited 5E state is reported, and has a value of approximately 50 cm -1. The inclusion of ligand field effects in the spin-orbit coupling constant was found to be important.
引用
收藏
页码:2197 / 2214
页数:18
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