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具有双层接口被动化的矿/双联太阳能电池

Jiang Liu^1,2, Yongcai He^3,4, Lei Ding^3,5

¹LONGi Central R&D Institute, LONGi Green Energy Technology Co. Ltd, Xi'an, China. liujiang28@longi.com.

|September 5, 2024

概括

研究人员开发了一种针对矿/双层太阳能电池的新型被动化策略. 这一突破实现了创纪录的33.89%的功率转换效率,超过了单连接电池的理论限制.

科学领域:

材料科学
可再生能源
太阳能发电

背景情况:

矿/双联太阳能电池提供比单连接电池更高的功率转换效率.
一个关键的挑战是尽量减少矿/电子传输层接口的重组,而不会阻碍电荷传输.

研究的目的:

开发用于矿/双重太阳能电池的有效界面消极化策略.
增强电子提取和抑制非辐射重组.
为了达到高的PCE,超过Shockley-Queisser的极限.

主要方法:

采用双层交织的被动化策略,使用化超薄层和二化分子.
在双纹理异质连接电池上制造的双重设备 (轻度纹理前部,重度纹理后部).
使用先进的特征来确认增强的光电流和被动化.

主要成果:

获得了33.89%的稳定功率转换效率.
记录了令人印象深刻的83.0%的充电率和近1.97V的开放电路电压.
证明同时增强光电流和后面被动化.

结论:

双层交织的被动化策略有效地抑制了界面重组,并增强了电荷提取.
开发的矿/双联太阳能电池实现了经过认证的创纪录效率,超过了单个连接的Shockley-Queisser限制.
这项工作为下一代高效光伏设备铺平了道路.

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