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Updated: Jun 10, 2025

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27.09%的效率异质连接反接触太阳能电池和超越

Genshun Wang^1,2,3,4, Qiao Su^1,4, Hanbo Tang^1,4

¹School of Materials, Shenzhen Campus of Sun Yat-sen University, No. 66, Gongchang Road, Shenzhen, Guangdong, 518107, P.R. China.

Nature communications

|October 16, 2024

概括

高效的晶异质连接反接触太阳能电池 (HBC SCs) 使用激光图案实现. 这一成功的关键是减轻孔选择性接触和晶圆边缘的重组损失.

科学领域:

太阳能光伏发电是如何实现的
材料科学材料科学材料科学
半导体物理半导体物理

背景情况:

晶异质连接反接触太阳能电池 (HBC SCs) 处于太阳能技术的最前沿.
在HBC SC中实现高效率受到电荷载体重组和传输限制的挑战.

研究的目的:

使用激光模式开发高效的HBCSCs.
识别和解决重组损失的主要来源.
优化细胞设计以提高性能.

主要方法:

使用激光图案来制造HBCSCs.
分析了孔选择性接触和极性边界的重组损失.
研究了后侧图案设计对接触电阻和连续电阻的影响.
在晶圆边缘评估载体重组.

主要成果:

在HBC SCs.取得了27.09%的认证效率.
确定了孔选择性接触区域和极性边界作为主要重组地点.
建立了接触电阻,连续电阻和后侧图案设计之间的相关性.
证明在减轻电影后,晶圆边缘重组变得占主导地位.

结论:

激光图案是生产高效HBCSCs的有效技术.
解决孔选择性接触和晶圆边缘的重组对于进一步提高效率至关重要.
优化被动化,反射涂层和反射器可以达到高达27.7%的效率.

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P-N junction

P-N junction

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