Ultrafast photoluminescence dynamics of biexcitons in a CuCl thin film grown by vacuum deposition

被引：4

作者：

Nakayama, M. ^{[1
]}

Wakaiki, S. ^{[1
]}

Mizoguchi, K. ^{[1
]}

Kim, D. ^{[1
]}

Ichida, H. ^{[2
]}

Kanematsu, Y. ^{[2
]}

机构：

[1] Osaka City Univ, Dept Appl Phys, Grad Sch Engn, Sumiyoshi Ku, Osaka 5588585, Japan

[2] Osaka Univ, Ctr Adv Sci & Innovat, Venture Business Lab, Suita, Osaka 5650871, Japan

来源：

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 10 | 2006年 / 3卷 / 10期

基金：

日本学术振兴会;

关键词：

D O I：

10.1002/pssc.200672146

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have investigated the ultrafast dynamics of the biexciton photoluminescence (PL) in a 500-nm thick CuCl thin film at 10 K using an optical Kerr gating method with a time resolution of similar to 1 ps. The CuCl thin film was grown by vacuum deposition. It is found that the biexciton-PL intensity has an excitation-power dependent rise time, which reflects the formation process of biexcitons, while its decay time is independent of the excitation power: 6.0 ps that is dominated by the transit time of the exciton polaritons travelling through the thin film. Furthermore, from the time-resolved PL spectra of the biexciton, we have observed a peak shift as a function of time, which is connected with the heating and cooling processes of the effective temperature in the excitonic system. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：3464 / +

页数：2

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