PERC背钝化结构提升多晶硅太阳电池的光电转换性能研究  

Enhanced Power Conversion Performance of Multi-crystalline Silicon Solar Cells with PERC Structure

作　　者：吕文辉 邱小永[1,2] 赵庆国 姚春梅 何一峰 高拥刚 陆波 LV Wenhui;QIU Xiaoyong;ZHAO Qingguo;YAO Chunmei;HE Yifeng;GAO Yonggang;LU Bo(Zhejiang Beyondsun PV Co.Ltd.,Huzhou 313008,CHN;Zhejiang Trunsun Solar Co.Ltd.,Huzhou 313008.CHN;Department of Applied Physics,Huzhou Normal University,Huzhou 313000,CHN)

机构地区：[1]浙江贝盛光伏股份有限公司,浙江湖州313008 [2]浙江创盛光能源有限公司,浙江湖州313008 [3]湖州师范学院应用物理系,浙江湖州313000

出　　处：《半导体光电》2020年第5期685-688,694,共5页Semiconductor Optoelectronics

基　　金：浙江省重点技术创新项目;湖州市科技计划项目(2019ZD2012,2018ZD2009,2019KT31);南太湖创新团队项目。

摘　　要：在工业产线上制备了PERC结构的多晶硅太阳电池,并研究了在电池背表面引入PERC背钝化结构对其光电转换性能的影响。结果表明:PERC背钝化结构能够提升电池的短路电流和开路电压,光电转换效率超过了20%。结合光学仿真及分析电池的关键光电参数知,其光电转换性能改善的原因可归结为PERC背钝化结构降低了长波太阳光子在背铝电极的寄生吸収损失和光生载流子的背表面复合损失。PERC背钝化结构能够提升多晶硅太阳电池的光电转换效率,并且其制备工艺与传统产线兼容,是一种优选的产业电池结构。Multi-crystalline silicon(mc-Si)solar cells with passivated emitter and rear cell(PERC)structure were successfully fabricated on an industrial production line,and the effects of PERC structure on the power conversion performance of the solar cells were studied.The results indicate that,the PERC mc-Si solar cells exhibit an enhanced short-circuit current and opencircuit voltage,resulting in high power conversion efficiency of up to 20.14%.The enhanced optoelectronic conversion can be attributed to the reduced parasitic absorption loss of long wavelength photons and reduced recombination of charge carriers on the rear surface of PERC mc-Si solar cells.The PERC structure can improve the conversion efficiency of mc-Si solar cells,and can be compatible with traditional process,thus it can be regarded as an optimal cell structure.

关 键 词：多晶硅太阳电池 PERC背钝化结构 光电转换效率 

分 类 号：TN40[电子电信—微电子学与固体电子学]