OPTICAL STUDY OF THE PIEZOELECTRIC FIELD-EFFECT IN (1 1 1)-ORIENTED CDTE/CDMNTE STRAINED QUANTUM-WELLS

被引：4

作者：

DANG, LS ^{[1
]}

ANDRE, R ^{[1
]}

BODINDESHAYES, C ^{[1
]}

CIBERT, J ^{[1
]}

OKUMURA, H ^{[1
]}

FEUILLET, G ^{[1
]}

JOUNEAU, PH ^{[1
]}

机构：

[1] CEN,PHYS SEMICOND LAB,F-38041 GRENOBLE,FRANCE

来源：

PHYSICA B | 1993年 / 185卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(93)90294-G

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on low-temperature reflection, transmission and photoluminescence studies of (111)-oriented CdTe/Cd1-xMnxTe (x almost equal to 0.16) strained quantum wells grown on nominal and vicinal Cd0.95Zn0.05Te substrates by molecular beam epitaxy. Only samples grown on vicinal substrates are twin-free and exhibit very sharp optical lines, making possible a quantitative study of exciton transitions. Analysis of the exciton transition energy and oscillator strength as a function of quantum well width provides unambiguous optical evidence of a piezoelectric field F almost equal to 0.8 x 10(5) V/cm in quantum wells strained by approximately -0.4%. Observations of exciton absorption in piezoelectric multiple quantum wells up to 80 K will also be reported for the first time.

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收藏

页码：551 / 556

页数：6

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