太阳能电池光载流子辐射复合的红外特性仿真与试验

刘俊岩; 秦雷; 龚金龙; 王扬; A. Mandelis

doi:doi:10.3724/sp.j.1010.2014.00248

红外与毫米波学报, 2014, 33 (3): 248, 网络出版: 2014-06-30

太阳能电池光载流子辐射复合的红外特性仿真与试验

Infrared radiation induced by photocarrier recombination in solar cells

论文大纲

刘俊岩 ^1,*秦雷 ¹龚金龙 ¹王扬 ¹A. Mandelis ²

作者单位

¹ 哈尔滨工业大学机电工程学院，黑龙江哈尔滨150001

² Center for Advanced Diffusion Wave Technologies (CADIFT), Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario MS5 3G8, Canada

载流子复合辐射复合红外辐射太阳能电池 carrier recombination radiative recombination infrared radiation solar cell

摘要

激光诱发硅太阳能电池产生载流子，由于少数载流子的复合而发射红外辐射.基于一维载流子传输方程，建立了调制激光诱发PN结少数载流子密度模型，利用该模型仿真分析了载流子寿命、扩散率、表面复合率及光电压对辐射复合产生红外辐射信号的影响.利用InGaAs红外探测器(0.9~1.7μm)记录激光诱发载流子辐射复合的红外辐射信号，用数字锁相放大器提取了幅值与相位.通过频率扫描试验获得了多晶硅太阳能电池载流子传输参数.

Abstract

In silicon solar cells, carriers are generated under illumination of laser, and excess minority carriers emit infrared radiation via a radiative recombination process. A model for minority carrier density in a pn junction induced by modulated laser was developed based on 1D carrier transport equation of semiconductor. The influences of carrier lifetime, diffusion coefficient, surface recombination rate, and photovoltage on radiation recombination, thus on infrared radiation were investigated. The laser-induced photocarrier radiometry signal was monitored using an InGaAs detector (0.9~1.7μm). The amplitude and phase of infrared radiation were obtained by a digital lock-in amplifier. Carrier transport parameters of m-Si solar cell were obtained by frequency-scanning experiments.

参考文献

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刘俊岩, 秦雷, 龚金龙, 王扬, A. Mandelis. 太阳能电池光载流子辐射复合的红外特性仿真与试验[J]. 红外与毫米波学报, 2014, 33(3): 248. LIU Jun-Yan, QIN Lei, GONG Jin-Long, WANG Yang, A. Mandelis. Infrared radiation induced by photocarrier recombination in solar cells[J]. Journal of Infrared and Millimeter Waves, 2014, 33(3): 248.

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