空间GaAs/Ge太阳电池电学性能仿真与优化机理研究  

Simulation and Optimization Mechanism of the Electrical Performance of Space GaAs/Ge Solar Cells

作　　者：王博浩 胡建民[1] Wang Bohao;Hu Jianmin(Harbin Normal University)

机构地区：[1]哈尔滨师范大学

出　　处：《哈尔滨师范大学自然科学学报》2022年第2期43-47,共5页Natural Science Journal of Harbin Normal University

基　　金：黑龙江省自然科学基金项目(LH2019A019)

摘　　要：以国产GaAs/Ge太阳电池AM0光谱辐照下的电学参数为基础,使用silvaco TCAD构建物理模型,研究太阳电池工作区厚度和掺杂浓度对电池电学参数的影响规律,旨在揭示空间太阳电池的结构参数影响电学性能的内在物理机制.结果表明,太阳电池外量子效率随发射区厚度的增加而逐渐降低,随基区厚度的增加先增高而后降低,发射区厚度的改变主要影响短波太阳光的吸收,而基区厚度的改变主要影响长波太阳光的吸收.短路电流随发射区厚度的增加而减小,随基区厚度的增加先增大而后略有减小,这主要是电池的外量子效率变化决定的.随发射区或者基区掺杂浓度的增高开路电压逐渐增高,而短路电流逐渐减小.随太阳电池结构参数的改变最大功率的变化都主要取决于短路电流的显著变化.In this paper,based on the electrical parameters of domestic GaAs/Ge solar cells under AM0 spectral irradiation,a physical model is constructed using silvaco TCAD.The influence of the thickness and doping concentration of the solar cells working area on the electrical parameters of the cells is studied.It aims to reveal the internal physical mechanism of the structural parameters of space solar cells affecting electrical performance.The results show that the external quantum efficiency of the solar cell gradually decreases with the increasing of the thickness of the emitter area,and first increases and then decreases with the increasing of the thickness of the base area.The change of the emission zone thickness mainly affects the absorption of short-wave sunlight,while the change of the base zone thickness mainly affects the absorption of long-wave sunlight.The short-circuit current decreases with the increasing of the thickness of the emitter region,and first increases and then decreases slightly with the increasing of the thickness of the base region,which is mainly determined by the change of the external quantum efficiency of the battery.With the increasing of the doping concentration of the emitter region or the base region,the open circuit voltage gradually increases,and the short-circuit current gradually decreases.With the change of the solar cell structure parameters,the maximum power are mainly determined by the significant changes in the short-circuit current.

关 键 词：GAAS太阳电池 silvaco TCAD 电学性能 

分 类 号：TM914.4[电气工程—电力电子与电力传动]