TOPCon-n-PERT太阳电池结构关键参数对其电性能影响的研究RESEARCH ON INFLUENCE OF KEY PARAMETERS OF TOPCon-n-PERT SOLAR CELL STRUCTURE ON ITS ELECTRICAL PERFORMANCE
吕欣,王旭花,刘国能
摘要(Abstract)：
本文利用Quokka3软件研究了采用TOPCon技术的n型PERT太阳电池(下文简称"TOPCon-n-PERT太阳电池")发射极的饱和电流密度、发射极-金属接触电阻率、背表面隧穿氧化层厚度及背表面饱和电流密度对其电性能的影响,并设计了相关实验对模拟结果进行了验证。验证结果表明:发射极和背表面的饱和电流密度值的增加均会使电池的光电转换效率和开路电压值逐渐减小;发射极-金属接触电阻率值的增加会导致电池填充因子的值降低;对于背表面的隧穿氧化层与掺杂多晶硅薄膜的叠层结构而言,随着背表面隧穿氧化层厚度逐渐增加,背表面的隐开路电压i-Voc值呈先增加后减小的趋势,且当背表面的隧穿氧化层厚度为1.2nm时,背表面的钝化特性达到最优值,实验得到的i-Voc值可达735 mV。同时,结合实验结果与理论模拟结果可知:当背表面隧穿氧化层厚度为1.2 nm时电池获得最优的电性能参数。该研究结果对于TOPCon-n-PERT太阳电池的产业化推广具有重要的指导意义。。
关键词(KeyWords)： TOPCon;n型;PERT;太阳电池;隧穿氧化层;电性能;模拟
基金项目(Foundation):
作者(Author): 吕欣,王旭花,刘国能
DOI: 10.19911/j.1003-0417.tyn20200819.02
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