RAMAN-SCATTERING RESONANT WITH EXCITONS IN CDZNTE/ZNTE MULTIPLE QUANTUM-WELLS

被引：5

作者：

LEE, D

ZUCKER, JE

JOHNSON, AM

FELDMAN, RD

AUSTIN, RF

机构：

[1] AT and T Bell Laboratories, Holmdel

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 01期

关键词：

D O I：

10.1063/1.105527

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied CdZnTe/ZnTe multiple quantum wells which have alloy wells and strained layers. Low-temperature Raman spectra reveal a strain-induced shift of the longitudinal optic phonon energy consistent with a strain coherently shared between well and barrier layers. In resonant Raman profiles, we observe strong incoming and outgoing resonances at the n = 1 heavy hole exciton transition that are well correlated with features in the photoluminescence and excitation spectra. Scattering by the CdTe-like phonon indicates an energy range for exciton localization by alloy fluctuations. The behavior of the ZnTe-like phonon near resonance is interpreted with exciton-polariton relaxation.

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页码：75 / 77

页数：3

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