文献类型：期刊文献

中文题名：闪锌矿GaN/Al_(0.15)Ga_(0.85)N量子点的光学特性

英文题名：Optical Properties of Cubic GaN/Al_(0.15)Ga_(0.85)N Quantum Dots

作者：吴花蕊[1];李在林[1]

第一作者：吴花蕊

机构：[1]新乡学院物理系

第一机构：新乡学院物理与电子工程学院

年份：2011

卷号：28

期号：1

起止页码：25-27

中文期刊名：新乡学院学报

基金：河南省教育厅自然科学研究基金(2009B140006)

语种：中文

中文关键词：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

外文关键词：cubic quantum dot; emission wavelength; electron-hole recombination; the exciton binding energy; exciton effect

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。
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.