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题名: Comparative study of optical properties between quantum dot chains band quantum dots
作者: Wang, BR;  Sun, Z;  Xu, ZY;  Sun, BQ;  Ji, Y;  Wang, ZM;  Salamo, GJ
发表日期: 2008
摘要: A comparative study of the steady-state and transient optical properties was made between InGaAs/GaAs quantum do chains (QDCs) and quantum dots (QDs). It was found that the photoluminescence (PL) decay time of QDCs exhibited a strong photon energy dependence, while it was less sensitive in QDs. The PL decay time increased much faster with the excitation power in the QDCs than that in QDs. When the excitation power was large enough, the PL decay time tended to be saturated. In addition, it was also found that the PL rise time was much shorter in QDCs than in QDs. All these experimental results show that there is a strong carrier coupling along the chain direction in the QD chain structure. The polarization PL measurements further confirm the carrier transfer process along the chain direction.
KOS主题词: Quantum dots;  Optical properties
刊名: JOURNAL OF INFRARED AND MILLIMETER WAVES
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Wang, BR ; Sun, Z ; Xu, ZY ; Sun, BQ ; Ji, Y ; Wang, ZM ; Salamo, GJ .Comparative study of optical properties between quantum dot chains band quantum dots ,JOURNAL OF INFRARED AND MILLIMETER WAVES,2008 ,27(3): 161-+
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