TOPCon太阳电池电子选择性接触研究

叶浩然; 何佳龙; 陈杨; 苏荣; 陈涛; 俞健

doi:10.19912/j.0254-0096.tynxb.2022-1689

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (2) : 475-479. DOI: 10.19912/j.0254-0096.tynxb.2022-1689

TOPCon太阳电池电子选择性接触研究

叶浩然¹, 何佳龙¹, 陈杨¹, 苏荣², 陈涛¹, 俞健¹

作者信息 +

RESEARCH ON ELECTRON SELECTIVE CONTACT OF TOPCon SOLAR CELLS

Ye Haoran¹, He Jialong¹, Chen Yang¹, Su Rong², Chen Tao¹, Yu Jian¹

Author information +

文章历史 +

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.

导出引用

叶浩然, 何佳龙, 陈杨, 苏荣, 陈涛, 俞健. TOPCon太阳电池电子选择性接触研究[J]. 太阳能学报. 2024, 45(2): 475-479 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1689

Ye Haoran, He Jialong, Chen Yang, Su Rong, Chen Tao, Yu Jian. RESEARCH ON ELECTRON SELECTIVE CONTACT OF TOPCon SOLAR CELLS[J]. Acta Energiae Solaris Sinica. 2024, 45(2): 475-479 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1689

中图分类号： TK513

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