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协同电子缺陷表面工程:矿光伏的电子载体提取的关键因素

Chi Li^1,2,3, Paramaguru Ganesan^1,2, Yuheng Li^1,2,4

¹State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.

Journal of the American Chemical Society

|July 8, 2025

概括

用更强的电子吸收组修改缺乏电子的分子层可以提高矿太阳能电池的性能. 这种电子性质,而不是双极导向,是矿/双极太阳能电池等设备中高效电子提取的关键.

科学领域:

材料科学
可再生能源
太阳能发电

背景情况:

自组装单层 (SAM) 调节透明导电氧化物的工作功能,以便在光电子设备中有效地提取电荷.
最近用于矿太阳能电池 (PSC) 的SAM偏离了双极定向原理,专注于电子丰富/缺乏表面修饰.

研究的目的:

系统地分析缺电子材料的PSC,调查电子性质与双极方向的影响.
优化电子选择性分子层 (ESML) 以提高单结和并联太阳能电池的性能.

主要方法:

对具有不同电子吸收强度的缺电子材料进行系统分析.
通过将碳酸替换为酸部分来修改基于双的ESML.
n-i-p PSC,SnO2/ESML/矿器件和四端矿/双联太阳能电池 (4T-P/STSC) 的制造和表征.

主要成果:

在ESML中用Bpy-CAA取代Bpy-COOH,提高了n-i-pPSC中的吸附,电子提取和被动化.
Bpy-CAA装置的效率为23.98% (相对于Bpy-COOH的23. 20%) 和1 cm2细胞的效率为21. 63%,这是有机ESML中报告的最高效率.
在SnO2/ESML/矿接触中,Bpy-CAA的整合效率为26.00%,在4T-P/STSC中为30.83%.

结论:

分子的电子性质,特别是电子吸收强度,对于有效的电子提取比双极方向更为关键.
量身定制的双功能ESML显著促进了高效的单节PSC和4T-P/STSC的发展.

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