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闪锌矿InGaN耦合量子点中的激子态

Exciton States in Zince-blende InGaN Coupled Quantum Dots
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摘要 在有效质量近似下,用变分法研究了受限于闪锌矿InGaN耦合量子点中的激子态.数值结果显示了量子点的结构参数和铟含量对闪锌矿InGaN耦合量子点中的激子态有明显的影响.激子结合能随着垒层厚度的增加有个最小值,而随着点高和半径的增加单调地降低. Based on the effective-mass approximation,the exciton states are investigated in zinc-blende InGaN/GaN coupled quantum dots by means of a variational method.Numerical results show that the exciton binding energy is highly dependent on the coupled quantum dots structure parameters.The exciton binding energy has a minmum value increasing the barrier width,however,it decreases when the dot height and radius are increased.
出处 《河南师范大学学报(自然科学版)》 CAS CSCD 北大核心 2011年第5期106-109,共4页 Journal of Henan Normal University(Natural Science Edition)
基金 郑州轻工业学院重大预研基金项目(2009XYYJJ006) 河南省科技厅基础与前沿技术研究(102300410108) 河南省教育厅自然科学研究计划项目(2011A140028)
关键词 激子 耦合量子点 INGAN exciton coupled quantum dots InGaN
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