%0 Journal Article
%T Optimizing modeling of two-color middle wavelength infrared photovoltaic HgCdTe detectors<br>中波HgCdTe双色红外探测器优化模拟计算
%A Xu Xiang-Yan
%A Ye Zhen-Hu
%A Li Zhi-Feng
%A Lu Wei
%A <br>徐向晏
%A 叶振华
%A 李志锋
%A 陆 卫
%J 物理学报
%D 2007
%I 
%X The performance of two-color middle wavelength photovoltaic HgCdTe detector is simulated numerically for design optimization. Three recombination mechanisms (radiation, Auger, and Shockley-Read-Hall(SRH)recombination), trap-assisted tunneling, and band-to-band tunneling are considered in two-dimensional model. The tunneling through barrier layer is calculated by transfer matrix method. The n-p-p-p-n structure is designed in simultaneous mode. The effect of SRH recombination electron lifetime in p-region on spectral response is examined, and the dependence of crosstalk on composition gradient of barrier layer is analyzed. Simulation results show that the quantum efficiency decreases rapidly with decrease of SRH electron lifetime in p-region,and at least about 10ns of SRH electron lifetime is essential for good performance of the detector. Crosstalk decreases to the steady value determined by optical crosstalk as the composition gradient of barrier layer increases to about 0.03, so critical composition gradient of about 0.03 is necessary for suppressing the electrical crosstalk.
%K HgCdTe middle wavelength two-color infrared detector
%K spectral response
%K spectral crosstalk
%K minority carrier lifetime<br>HgCdTe中波双色红外探测器
%K 光谱响应
%K 光谱串音
%K 少子寿命
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=510903A8F97A8470&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=94C357A881DFC066&sid=9DA3D7FB2D9A6691&eid=0A4E263351E626B4&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=12