纤锌矿和闪锌矿GaN/Al_(0.3)Ga_(0.7)N量子阱中激子能量的对比研究  

Comparative study of exciton energy in wurtzite and zinc blende GaN/Al_(0.3)Ga_(0.7)N quantum well

作　　者：邢德胜[1] 钱雅萍[1] 

机构地区：[1]集宁师范学院计算机系,内蒙古乌兰察布012000

出　　处：《集宁师专学报》2009年第4期16-19,共4页Journal of Jining Teachers College

摘　　要：本文分别计算了纤锌矿和闪锌矿GaN/Al_(0.3)Ga_(0.7)N量子阱中重空穴激子的基态能量和结合能,给出了这两种量子阱中激子的基态能量和结合能随量子阱宽度变化的函数关系.结果表明,纤锌矿和闪锌矿GaN/Al_(0.3)Ga_(0.7)N量子阱材料中激子的基态能量和结合能随着量子阱宽度的增大而降低,在阱宽较小时急剧下降,阱宽较大时缓慢下降,最后缓慢接近于GaN体材料的三维值;闪锌矿GaN/Al_(0.3)Ga_(0.7)N量子阱中激子的基态能量明显高于纤锌矿GaN/Al_(0.3)Ga_(0.7)N量子阱中激子的基态能量,而闪锌矿GaN/Al_(0.3)Ga_(0.7)N量子阱中激子的结合能明显低于纤锌矿GaN/Al_(0.3)Ga_(0.7)N量子阱中激子的结合能。In this paper The ground state energy and binding energy of an exciton in a Zinc blende GaN/Al_(0.3)Ga_(0.7)N quantum well and in a wurtzite GaN/Al_(0.3)Ga_(0.7)N quantum well are calculated. The ground state energy and binding energy of a heavy-hole exciton as function of well width are given.The results show that the ground state energy and binding energy of a heavy-hole exciton in GaN/Al_(0.3)Ga_(0.7)N quantum well decreases when the well width increases;and the energy decreases rapidly at a narrow well,...

关 键 词：氮化物量子阱 激子 基态能量 结合能 

分 类 号：O431.2[机械工程—光学工程]