Radiative and nonradiative recombination processes in lattice-matched (Cd,Zn)O/(Mg,Zn)O multiquantum wells

被引：158

作者：

Makino, T ^{[1
]}

Chia, CH

Tuan, NT

Segawa, Y

Kawasaki, M

Ohtomo, A

Tamura, K

Koinuma, H

机构：

[1] RIKEN, Photodynam Res Ctr, Sendai, Miyagi 9800845, Japan

[2] Tokyo Inst Technol, Dept Innovat & Engineered Mat, Yokohama, Kanagawa 2268502, Japan

[3] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 980, Japan

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 11期

关键词：

D O I：

10.1063/1.1308540

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Time-resolved photoluminescence studies have been performed on (Cd,Zn)O/(Mg,Zn)O multiquantum wells, which are almost perfectly lattice matched (0.034%), grown by laser molecular-beam epitaxy on a ScAlMgO4 substrate. Radiative recombination of excitons in the wells exhibits a significant spectral distribution of times. This distribution was interpreted in terms of localization of excitons by potential fluctuations due to alloy disorder and to well width and depth variations. The temperature dependence of the radiative lifetime of excitons was deduced from the measurement of both the photoluminescence decay time and intensity. We found that the radiative lifetime increases linearly with temperature, showing a two-dimensional feature of excitons in the quantum wells. (C) 2000 American Institute of Physics. [S0003-6951(00)01837-4].

引用

页码：1632 / 1634

页数：3

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