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在高效的矿太阳能电池中用于酸核化的压力放松

Zhimiao Zheng¹, Yansong Ge¹, Xiangfeng Yang²

¹Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan, 430072, China.

Advanced materials (Deerfield Beach, Fla.)

|January 22, 2025

概括

用三甲硫酸盐减少锡氧化物层的拉伸应力,增强多孔酸膜. 这一策略可以提高矿太阳能电池的晶度,效率和稳定性.

科学领域:

材料科学材料科学材料科学
固态化学固态化学
太阳能光伏发电是如何实现的

背景情况:

高质量的矿膜对于高效的太阳能电池至关重要.
多孔化 (PbI2) 薄膜对于通过连续沉积形成矿至关重要.
锡 (IV) 氧化物 (SnO2) 电子输送层 (ETL) 中的拉伸应力对 PbI2 膜形态和结晶产生负面影响.

研究的目的:

调查SnO2 ETL中拉伸应力的影响对PbI2薄膜的特性.
开发一种方法来降低SnO2/PbI2接口的拉力应力.
为了提高矿太阳能电池的质量,效率和稳定性.

主要方法:

使用三甲硫酸盐 (LiOTf) 作为接口修饰剂.
将LiOTf应用于SnO2/PbI2接口以减少拉伸应力.
分析了减少应力对PbI2膜形态,结晶和矿形成的影响.
研究了SnO2电子陷的被动化和界面能量水平的光滑.

主要成果:

LiOTf的修改成功地减少了SnO2ETL中的拉伸应力.
减少压力导致更多孔的PbI2膜,具有更大的颗粒和更高的粗度.
改进的PbI2薄膜产生了优质的矿薄膜.
SnO2陷的被动化和平滑的能量水平促进了电荷的提取和转移.
实现了25.33%的冠军功率转换效率 (PCE) (25.10%稳定).
证明了设备的特殊稳定性,在经营压力下600小时后保持90%的PCE.

结论:

界面应力工程是增强矿太阳能电池的可行策略.
LiOTf对SnO2/PbI2接口的修改有效地提高了矿膜质量和设备性能.
开发的方法为高效和稳定的矿太阳能电池提供了一条途径.

关键词:

半孔性PbI2薄膜是一种透性薄膜.矿太阳能电池是如何使用的多功能的SnO2 一个连续的沉积沉积.拉力应力是一种拉力应力.

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