| 激光束诱导电流法提取HgCdTe光伏探测器的电子扩散长度 |
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| 引用本文： | 殷菲,胡伟达,全知觉,张波,胡晓宁,李志锋,陈效双,陆卫.激光束诱导电流法提取HgCdTe光伏探测器的电子扩散长度[J].物理学报,2009,58(11):7884-7890. |
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| 作者姓名： | 殷菲 胡伟达 全知觉 张波 胡晓宁 李志锋 陈效双 陆卫 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金(批准号: 10734090，10725418)、上海-应用材料研究与发展基金(批准号: 08520740600)和航空科学基金(批准号: 20080190001)资助的课题. |
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| 摘 要： | 由于得到HgCdTe扩散长度Lp的标准测试结构会损伤p-n结单元，实验中广泛采用激光束诱导电流（LBIC）提取的等效扩散长度L来代替Lp.本文通过二维数值模拟，分析了等效扩散长度L和扩散长度Lp 的关系.二者的比例关系为L/Lp=1.1，该基本关系不受器件的关键参数如掺杂浓度、载流子寿命、载流子迁移率等的影响.最后将激光束
关键词：
碲镉汞
激光束诱导电流
扩散长度
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| 关 键 词： | 碲镉汞 激光束诱导电流 扩散长度 |
| 收稿时间： | 5/5/2008 12:00:00 AM |
Determination of electron diffusion length in HgCdTe photodiodes using laser beam induced current |
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| Yin Fei,Hu Wei-D,Quan Zhi-Jue,Zhang Bo,Hu Xiao-Ning,Li Zhi-Feng,Chen Xiao-Shuang and Lu Wei.Determination of electron diffusion length in HgCdTe photodiodes using laser beam induced current[J].Acta Physica Sinica,2009,58(11):7884-7890. |
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| Authors: | Yin Fei Hu Wei-D Quan Zhi-Jue Zhang Bo Hu Xiao-Ning Li Zhi-Feng Chen Xiao-Shuang and Lu Wei |
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| Abstract: | The standard diffusion length (L_p) test procedure is apt to damage the p-n junction, so we often use characteristic decay length (L) obtained by laser beam induced current (LBIC) instead of L_p. Two dimeasiortal modeling is used to get the relations of L and Lo. Calculated L/L_p ratio is about 1.1, and it is not affected by doping concentration, Shockley-Read-Hall (SRH) lifetime and mobility. For HgCdTe photodiodes, we get characteristic decay length from the LBIC experiment, and get the true diffusion length by division by the ratio 1.1. |
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| Keywords: | HgCdTe laser beam induced current (LBIC) diffusion length |
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