Exciton and intracenter radiative recombination in ZnMnTe and CdMnTe quantum wells with optically active manganese ions

被引：7
|
作者：
Agekyan, V. F.
Akai, I.
Vasil'ev, N. N.
Karasawa, T.
Karczewski, G.
Serov, A. Yu.
Filosofov, N. G.
机构：
[1] St Petersburg State Univ, Fock Inst Phys, St Petersburg 198504, Peterhof, Russia
[2] Osaka City Univ, Osaka 558, Japan
[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
来源：
PHYSICS OF THE SOLID STATE | 2007年 / 49卷 / 06期
关键词：
D O I：
10.1134/S106378340706025X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
-The emission spectra of Zn1-xMnxTe/Zn0.6Mg0.4Te and Cd1-x MnxTe/Cd0.5Mg0.5Te quantum-well structures with different manganese concentrations and quanturn-well widths are studied at excitation power densities ranging from 10(5) to 10(7) W cm(-2) Under strong optical pumping, intracenter luminescence of Mn2+ ions degrades as a result of the interaction of excited manoanese ions with high-density excitons. This process is accompanied by a strong broadening of the emission band of quanturn-well excitons due to the exciton-exciton interaction and saturation of the exciton-round state. Under pumping at a power density of 10(5) W cm(-2), stimulated emission of quanturn-well excitons arises in CdTe/Cd0.5Mg0.5Te. The luminescence kinetics of the quanturn-well and barrier excitons is investigated with a high temporal resolution. The effect of the quantum-well width and the manganese concentration on the kinetics and band shape of the Mn 2, intracenter luminescence characterized by the contribution of the manganese interface ions is determined.
引用
收藏
页码：1175 / 1183
页数：9
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