TIME-RESOLVED SPECTROSCOPY OF BIEXCITON LUMINESCENCE IN ZNXCD1-XSE-ZNSYSE1-Y MULTIPLE-QUANTUM WELLS

被引:23
作者
YAMADA, Y
MISHINA, T
MASUMOTO, Y
KAWAKAMI, Y
YAMAGUCHI, S
ICHINO, K
FUJITA, S
FUJITA, S
TAGUCHI, T
机构
[1] KYOTO UNIV,DEPT ELECT ENGN,KYOTO 60601,JAPAN
[2] OSAKA UNIV,DEPT ELECT ENGN,SUITA,OSAKA 565,JAPAN
来源
PHYSICAL REVIEW B | 1995年 / 51卷 / 04期
关键词
D O I
10.1103/PhysRevB.51.2596
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The radiative lifetime of biexcitons in ZnxCd1-xSe-ZnSySe1-y multiple quantum wells has been studied by means of time-resolved luminescence spectroscopy under high-density excitation. It is shown that the rise of the biexciton luminescence becomes more rapid with increasing excitation energy density and that the biexciton luminescence decays with a double exponential form. It is found that the decay-time constant of the faster-decay component in the double-exponential decay corresponds to the radiative lifetime of the biexciton. Its value is about 6 ps at 2 K and is about one-seventh of that in bulk ZnSe (40 ps). © 1995 The American Physical Society.
引用
收藏
页码:2596 / 2599
页数:4
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