空穴在动量空间分布对p型量子阱红外探测器响应光谱的影响  

The effect of distribution of holes in the momentum-space on the photoresponse of p-type quantum well infrared photodetector

作　　者：周旭昌[1] 陈效双[1] 甄红楼[1] 陆卫[1] 

机构地区：[1]中国科学院上海技术物理研究所红外物理国家重点实验室,上海200083

出　　处：《物理学报》2006年第8期4247-4252,共6页Acta Physica Sinica

基　　金：国家自然科学基金创新研究群体(批准号:60221502);国家自然科学基金(批准号:10234040;60476040;60576068);国家重点基础研究发展规划(批准号:2001CB610407)资助的课题.~~

摘　　要：通过对p型量子阱红外探测器(QWIP)的自洽计算,得到了量子阱价带的电子结构和器件的光电流谱,并研究了载流子在动量空间分布对p型QWIP光谱响应的影响.计算结果表明,在动量空间不同区域的空穴对器件的光谱响应起着不同作用,从而使得在p型QWIP中,空穴浓度和温度都将影响器件的响应光谱.所得结果合理地解释了实验中器件响应光谱随掺杂浓度和温度的变化.The electronic structure and photoresponse of p-type quantum well infrared photodetector （QWIP） are calculated by selfconsistent method. The effect of distribution of holes in the momentum-space on the photoresponse of the device is studied. The calculation results show that the contribution of holes to the photocurrent depends on the distribution of holes in the momentumspace, so the density of holes and the temperature influence the photoresponse of the p-type QWIP. The theoretical results agree well in the change of photoresponse of device with doping concentration and temperature in the experiment.

关 键 词：p型量子阱红外探测器 响应光谱 空穴浓度 温度 

分 类 号：O471.1[理学—半导体物理]