Radiative lifetime of resonantly excited excitons in quantum dots.

被引：4

作者：

Ruhle, WW

Kurtenbach, A

Eberl, K

机构：

[1] Max-Planck-Institut für Festkörperforschung, Stuttgart, D-70569

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS | 1995年 / 17卷 / 11-12期

关键词：

D O I：

10.1007/BF02457202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the intrinsic radiative lifetime of excitons in InP quantum dots embedded in an In0.48Ga0.52 P matrix. This lifetime is about 400 ps as measured by time-resolved photoluminescence with resonant excitation of the ground states. It is independent of excitation density and temperature demonstrating the quantum dot nature of the InP islands and the strong localization of the excitons. Similar experiments on excitons localized by well width fluctuations in a GaAs quantum well reveal distinct differences: weakly localized excitons disappear with increasing density or temperature.

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页码：1305 / 1313

页数：9

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