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量子链和量子点光学特性的比较研究
Authors
G. J. Salamo
Z. M. Wang
+5 more
姬扬
孙宝权
孙征
徐仲英
王宝瑞
Publication date
1 January 2008
Publisher
Abstract
比较研究了InGaAs/GaAs量子链和量子点的稳态和瞬态光学特性.实验发现,量子链的荧光寿命有很强的探测能量依赖关系,而量子点的荧光寿命随能量变化较小;量子链的荧光寿命随着激发功率迅速增加,高功率时趋于饱和,而量子点的荧光寿命随激发功率变化缓慢;此外,量子链样品的荧光上升时间也比量子点的小得多.这些结果清楚表明,在量子链结构中,参与发光的载流子之间存在很强的耦合和输运.进一步分析表明,这种耦合作用主要发生在量子链方向.荧光的偏振特性进一步证实了这一点
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Last time updated on 15/03/2019