The ground-state exciton lifetime of PbSe nanocrystal quantum dots

被引：27
作者：
Kigel, A.
Brumer, M.
Maikov, G.
Sashchiuk, A. [1 ]
Lifshitz, E.
机构：
[1] Technion Israel Inst Technol, Schulich Fac Chem, IL-32000 Haifa, Israel
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2009年 / 46卷 / 1-2期
关键词：
Nanocrystals; Quantum dots; Exciton; Photoluminescence; Lifetime; ELECTRONIC-STRUCTURE; RECOMBINATION; TIME;
D O I：
10.1016/j.spmi.2008.11.026
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have investigated the ground-state exciton lifetime of PbSe nanocrystal quantum dots (NQDs). We found, under variation NQDs sizes, surrounding temperature and media, that the ground-state exciton lifetime of PbSe core NQDs showed a steep decrease of the lifetime from 6 to 1 mu s when the temperature is changed from 7 to 150 K, while above that temperature, there is only a minor change in the measured lifetime, which are influenced of the surrounding medium. (C) 2008 Elsevier Ltd. All rights reserved
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收藏
页码：272 / 276
页数：5
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