CENTER-OF-MASS QUANTIZATION OF EXCITONS IN CDTE/CD1-XZNXTE QUANTUM-WELLS

被引：21
|
作者：
TOMASSINI, N
DANDREA, A
DELSOLE, R
TUFFIGOULMER, H
COX, RT
机构：
[1] UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY
[2] CEN GRENOBLE,DEPT RECH FONDAMENTALE MATIERE CONDENSEE,F-38054 GRENOBLE 09,FRANCE
来源：
PHYSICAL REVIEW B | 1995年 / 51卷 / 08期
关键词：
D O I：
10.1103/PhysRevB.51.5005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Photoluminescence excitation spectra are obtained for a large set of strained CdTe/Cd1-xZnxTe single-quantum-well samples, as a function of well thickness. The experimental spectra are reproduced by an accurate variational exciton envelope function, expanded in products of electron and hole subbands. An analytical approximation for the exciton envelope function, well suited for thin films with finite confinement potentials, is also given. The good agreement obtained between theory and experiment for both methods strongly supports the concept of center-of-mass quantization for this quantum-well system in the thickness range from 180 to 1000. © 1995 The American Physical Society.
引用
收藏
页码：5005 / 5012
页数：8
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