RELAXATION OF EXCITONS IN COHERENTLY STRAINED CDTE/ZNTE QUANTUM-WELLS

被引：42

作者：

COLLET, JH

KALT, H

DANG, LS

CIBERT, J

SAMINADAYAR, K

TATARENKO, S

机构：

[1] UNIV J FOURIER,SPECTROMETRIE PHYS LAB,F-38402 ST MARTIN DHERES,FRANCE

[2] UNIV PAUL SABATIER,PHYS SOLIDES LAB,F-31077 TOULOUSE,FRANCE

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.43.6843

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The relaxation kinetics of photogenerated excitons have been investigated in coherently strained CdTe/ZnTe quantum wells. Picosecond time-resolved luminescence spectra clearly display several replicas of the excitation pump due to the relaxation of photogenerated excitons in the CdTe well assisted by the emission of optical phonons. The luminescence replicas merge into a single broad-band at a time typically larger than 300 ps, revealing spatial diffusion of excitons in the well. We study the gradual localization of photogenerated excitons from the decay of the hot luminescence.

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页码：6843 / 6846

页数：4

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