Dynamics of dense exciton gas in semiconductor nanocrystals

被引：2
|
作者：
Tamulaitis, G [1 ]
Pakalnis, S [1 ]
Baltramiejunas, R [1 ]
机构：
[1] INST PHYS,LT-2600 VILNIUS,LITHUANIA
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 31期
关键词：
D O I：
10.1088/0953-8984/9/31/026
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The nonlinear absorption of CuBr nanocrystals embedded in a transparent glass matrix was investigated by using the excite-and-probe method. The luminescence properties of samples with different average nanocrystal radii were also studied. A fast-decaying damping of Z(1,2) exciton absorption band was observed, and interpreted as being mainly caused by elastic collisions between excitons. The relationship between the photoinduced changes of the absorption and the exciton density was established. Radiative exciton-exciton interaction and surface recombination were revealed as the main recombination processes governing the decay of excitons in CuBr nanocrystals, and the relevant rate constants were evaluated.
引用
收藏
页码：6771 / 6780
页数：10
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