The ground-state exciton lifetime of PbSe nanocrystal quantum dots

被引：26

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

引用

页码：272 / 276

页数：5

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