| In0.4Ga0.6As/GaAs自组织量子点的光伏谱温度特性 |
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| 引用本文： | 吴正云,陈主荣.In0.4Ga0.6As/GaAs自组织量子点的光伏谱温度特性[J].光电子．激光,2000,11(4):366-369. |
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| 作者姓名： | 吴正云 陈主荣 |
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| 作者单位： | 厦门大学物理系!福建厦门361005(吴正云，陈主荣，黄启圣)，中科院半导体研究所半导体材料开放实验室北京100083(姜卫红，卢励吾，王占国) |
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| 基金项目： | 福建省自然科学基金重点资助项目!( A992 0 0 1) |
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| 摘 要： | 自组织生长方法作为一种有效而直接的制备半导体量子点的方法受到重视。本文采用无需在样品上制备电极的电容耦合的光伏谱方法，实验测量了Ｉｎ０．４Ｇａ０．６Ａｓ／ＧａＡｓ自组织量子点在不同的温度下的光伏谱，对测量谱峰进行了指认，研究了量子点谱峰能量位置随温度的依赖关系，实验结果表明，量子点具有与体材料及二维体系不同的温度特性，对实验所测样品，其激子峰能量随温度增加而红移的速率约为ＧａＡｓ体材料带隙变化的１
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| 关 键 词： | 自组织 量子点 低温光伏谱 InGaAs／GaAs |
| 修稿时间： | 2000-05-07 |
Temperature Behavior of Photovoltaic Exciton Lines in Self-orga nized InGaAs/GaAs Quantum Dots |
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| WU Zheng-yun,CHEN Zhu-rong,HUANG Qi-sheng,JIANG Wei-hong,LU Li-wu,WANG Zhan-guo.Temperature Behavior of Photovoltaic Exciton Lines in Self-orga nized InGaAs/GaAs Quantum Dots[J].Journal of Optoelectronics·laser,2000,11(4):366-369. |
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| Authors: | WU Zheng-yun CHEN Zhu-rong HUANG Qi-sheng JIANG Wei-hong LU Li-wu WANG Zhan-guo |
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| Affiliation: | WU Zheng-yun,CHEN Zhu-rong,HUANG Qi-sheng,JIANG Wei-hong 1,LU Li-wu 1,WANG Zhan-guo 1 |
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| Abstract: | Photovoltaic(PV) spectroscopy measurem ents at various temperature on self-organized InGaAs/GaAs quantum dots were per formed.Pronounced peaks A and B in the spectra are identified,they represent exc iton emissions from bulk GaAs and InGaAs/GaAs quantum dots respectively.A fast r edshift of exciton line peaks from quantum dots with increasing temperature were observed,it is believed that this unusual temperature behavior is related to th e size inhomogeneous of quantum dots. - |
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| Keywords: | self-organized quantum dots low te mperature photovoltaic spectroscopy |
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