...
首页> 外文期刊>Physica status solidi, B. Basic research >Confined multiexciton states of GaAs/AlGaAs quantum dots grown on a (411)A GaAs surface
【24h】

Confined multiexciton states of GaAs/AlGaAs quantum dots grown on a (411)A GaAs surface

机译:在(411)A GaAs表面上生长的GaAs / AlGaAs量子点的受限多激子态

获取原文
获取原文并翻译 | 示例
           

摘要

We have investigated the micro photoluminescence (micro-PL) spectra of a single GaAs/AlGaAs quantum dot (QD) grown on a (411)A GaAs substrate, and observed sharp luminescence lines. These luminescence lines are classified into three types in terms of their excitation-power dependence. For one of them the intensity increases linearly with excitation power density, and the others that appear at the lower and higher energy sides of the linear one exhibit superlinear dependence. The difference in the excitation-power dependence reflects the number of excitons created in a QD, namely, the linear dependence originates from the lowest state of a confined exciton, and the others from biexcitonic and multiple exciton states. [References: 4]
机译:我们已经研究了在(411)A GaAs衬底上生长的单个GaAs / AlGaAs量子点(QD)的微光致发光(micro-PL)光谱,并观察到清晰的发光线。这些发光线根据其激发功率依赖性而分为三种。对于它们之一,强度随激励功率密度线性增加,而出现在线性能量较低和较高能量侧的其他强度则表现出超线性相关性。激发功率相关性的差异反映了在量子点中产生的激子数量,即线性相关性源自受限激子的最低态,其他依赖于双激子态和多重激子态。 [参考:4]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号