半导体量子点内弹性应变能的研究

人工晶体学报, 2004, 33(4): 531-534. doi: 10.3969/j.issn.1000-985X.2004.04.014

半导体量子点内弹性应变能的研究

1.北京邮电大学理学院,北京,100876

2.北京邮电大学理学院,北京,100876

3.北京邮电大学理学院,北京,100876

4.中国科学院半导体研究所,集成光电子学国家重点联合实验室,北京,100083

基金项目: 国家重点基础研究发展计划(973计划)(2003CB314901) the Open Project of the State Key Laboratory Integrated Optoelectronics, Institut of Semiconductors,Chinese Academy of Sciences 国家高技术研究发展计划(863计划)(2003AA311070)

关键词：量子点 , 弹性应变 , 有限元分析

Investigation on Elastic Strain Energy in Quantum Dots

Keywords： quantum dot , elastic strain , finite element analysis

本文用有限元分析软件ANSTS 6.0计算了半导体量子点内的弹性应变和弹性应变能, 通过对金塔形、台形和圆顶形量子点内总弹性应变能的计算和总能量的比较,得到了在热平衡条件下金字塔形量子点是最稳定的结构.

In this paper, we calculated the elastic strain and elastic strain energy inside the semiconductor quantum dots by using the finite element programming package ANSYS 6.0. The values of elastic strain and strain energy in the three shapes of quantum dots were calculated, and led to the conclusion that the pyramid island structure of quantum dots is the most stable shape in the three shapes under thermal-equilibrium condition.

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