| 闪锌矿GaN/Al0.15Ga0.85N量子点的光学特性 |
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| 引用本文： | 吴花蕊,李在林.闪锌矿GaN/Al0.15Ga0.85N量子点的光学特性[J].新乡学院学报(自然科学版),2011,28(1):25-27. |
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| 作者姓名： | 吴花蕊 李在林 |
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| 作者单位： | 新乡学院,物理系,河南,新乡,453003 |
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| 基金项目： | 河南省教育厅自然科学研究基金 |
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| 摘 要： | 在有效质量近似条件下,利用变分法计算了量子点高度对GaN/AlGaN量子点光学性质的影响。研究了激子结合能、量子点发光波长、电子-空穴复合率随量子点高度的变化关系。数据结果表明量子点高度对激子结合能、量子点发光波长、电子-空穴复合率有着重要的影响,激子效应将使量子点发光波长红移。
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| 关 键 词： | 闪锌矿量子点 发光波长 电子-空穴复合率 激子结合能 激子效应 |
Optical Properties of Cubic GaN/Al0.15Ga0.85N Quantum Dots |
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| Authors: | WU Hua-rui LI Zai-lin |
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| Institution: | (Department of Physics,Xinxiang University,Xinxiang 453003,China) |
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| Abstract: | Based on the framework of effective-mass approximation and variational approach,the optical properties of cubic GaN/Al0.15Ga0.85N quantum dots were investigated theoretically.Considering the three-dimensional confinement of electron and hole,the exciton binding energy,the emission wavelength and the oscillator strength were calculated as function of the dot height L.The results indicate that the dot height L has a significant influence on the exciton binding energy,the emission wavelength and the electron-hole recombination.Furthermore,exciton effect will make the emission wavelength increase. |
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| Keywords: | cubic quantum dot emission wavelength electron-hole recombination the exciton binding energy exciton effect |
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