TOPCon太阳电池电子选择性接触研究
RESEARCH ON ELECTRON SELECTIVE CONTACT OF TOPCon SOLAR CELLS
叶浩然 1何佳龙 1陈杨 1苏荣 2陈涛 1俞健1
作者信息
- 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
- 折叠
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SiO2层厚度、n+ poly-Si层掺杂浓度、背金属电极功函数以及SiO2/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:SiO2/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SiO2层厚度为1.1 nm、n+ poly-Si层掺杂浓度为1×1020 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.
Abstract
Through Afors-Het simulation software,the TOPCon solar cell model is established and the effects of tunneling through the oxide SiO2 layer thickness,n+ poly-Si layer doping concentration,back-metal electrode work function and energy band offset of the SiO2/n+ poly-Si side on the performance of TOPCon solar cells are systematically analyzed.The simulation results show that the SiO2/n+ poly-Si stacked passivation structure can achieve better electron selective transport performance.It is the best process window when the thickness of the SiO2 layer is 1.1 nm and the doping concentration of the n+ poly-Si layer is 1×1020 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/TOPConKey words
solar cells/passivation/electronic properties/simulation platform/TOPCon引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
维普
万方数据