ANTI-STOKES EMISSION RELATED TO EL2 IN GAAS

被引:2
作者
MORI, Y
ONOZAWA, K
OHKURA, H
CHIBA, Y
机构
[1] OKAYAMA UNIV SCI,DEPT ELECTR ENGN,OKAYAMA 700,JAPAN
[2] SCI UNIV TOKYO,DEPT APPL PHYS,TOKYO 162,JAPAN
关键词
D O I
10.1016/0022-2313(91)90244-P
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Two anti-Stokes emission bands peaking at 1.0 and 1.34 eV have been observed in GaAs excited by 0.93 eV laser light. The relation of these two bands to the EL2 defect is investigated on the basis of the photoquenching and optical properties of EL2. Mechanisms to yield the anti-Stokes emission bands are discussed with reference to metastable states of EL2. The emission energy of the 1.0 eV band is close to the intracenter transition of EL2 and the L-minimum of the conduction band. The 1.34 eV band is probably related to a recombination process between a free electron and a Cu-related acceptor in GaAs.
引用
收藏
页码:800 / 802
页数:3
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