TOPCon太阳电池电子选择性接触研究  

RESEARCH ON ELECTRON SELECTIVE CONTACT OF TOPCon SOLAR CELLS

作　　者：叶浩然 何佳龙 陈杨[1] 苏荣 陈涛[1] 俞健 Ye Haoran;He Jialong;Chen Yang;Su Rong;Chen Tao;Yu Jian(School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China;Tongwei Solar(Chengdu)Co.,Ltd.,Chengdu 610200,China)

机构地区：[1]西南石油大学新能源与材料学院,成都610500 [2]通威太阳能(成都)有限公司,成都610200

出　　处：《太阳能学报》2024年第2期475-479,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(61904154);四川省重点研发计划(2022YFG0229);成都市技术创新研发项目(2022-YF05-00384-SN)。

摘　　要：通过Afors-Het软件模拟建立TOPCon太阳电池模型,系统分析隧穿氧化SiO_(2)层厚度、n^(+)poly-Si层掺杂浓度、背金属电极功函数以及SiO_(2)/n^(+)poly-Si侧的能带偏移量对TOPCon太阳电池性能的影响。结果表明:SiO_(2)/n^(+)poly-Si叠层钝化结构能实现较好的电子选择性传输性能,当SiO_(2)层厚度为1.1 nm、n^(+)poly-Si层掺杂浓度为1×10^(20)cm^(-3)时,是最佳工艺窗口,且显示出改善电子选择性传输层对于TOPCon太阳电池效率提升的巨大潜力。Through Afors-Het simulation software,the TOPCon solar cell model is established and the effects of tunneling through the oxide SiO_(2) layer thickness,n^(+)poly-Si layer doping concentration,back-metal electrode work function and energy band offset of the SiO_(2)/n^(+)poly-Si side on the performance of TOPCon solar cells are systematically analyzed.The simulation results show that the SiO_(2)/n^(+)poly-Si stacked passivation structure can achieve better electron selective transport performance.It is the best process window when the thickness of the SiO_(2) layer is 1.1 nm and the doping concentration of the n^(+)poly-Si layer is 1×10^(20) cm^(-3).It also shows the great potential of improving the electron selective transport layer for the efficiency improvement of TOPCon solar cells.

关 键 词：太阳电池 钝化 电子特性 模拟平台 TOPCon 

分 类 号：TK513[动力工程及工程热物理—热能工程]