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格子应变调节可以实现高性能Formamidinium Perovskite光伏产品

Rui Wang¹, Xinhao Li¹, Jiahui Qi¹

¹Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|June 16, 2023

概括

在formamidinium酸 (FAPbI3) 矿太阳能电池中,使用4-pyrene oxybutylamine (PYBA) 调节了压力. 这减少了压力,提高了矿太阳能电池的功率转换效率和运行稳定性.

科学领域:

材料科学材料科学材料科学
固态物理固态物理
太阳能光伏发电是如何实现的

背景情况:

酸 (FAPbI3) 矿是高效单节矿太阳能电池 (PSC) 的有希望的材料,因为它具有理想的光学带隙.
然而,由大formamidinium (FA) 离子引起的内在晶格应变限制了PSC的功率转换效率 (PCE) 和运行稳定性.

研究的目的:

为了调节 FAPbI3 晶体中的格子应变,使用 π 结合的有机氨基,4-烯氧丁胺 (PYBA).
通过减轻压力诱导的限制,提高基于FAPbI3的PSC的PCE和运行稳定性.

主要方法:

将PYBA纳入FAPbI3矿膜.
使用粒度边界上的PYBA对作为面向结晶的模板.
研究PYBA对格子应变,带隙和陷密度的影响.

主要成果:

PYBA诱导了高度定向的晶体和一个纯的α相FAPbI3膜.
通过π-π相互作用,PYBA有效地弥补了固有的张力应变,释放了应变.
应变释放导致带隙和陷密度下降,从而提高了价值带.
经PYBA监管的FAPbI3 PSC实现了24.76%的PCE,并改善了运行稳定性 (>80%的PCE在1500小时后).

结论:

PYBA是FAPbI3矿太阳能电池中应变调节的有效添加剂.
通过PYBA缓解网格应变,可以显著提高PSC的效率和长期稳定性.
这种方法为开发下一代高性能矿太阳能电池提供了可行的策略.

关键词:

运输公司运输运营商运输运输结晶的动力学结晶的动力学形成阿米酸的化.格子应变调节格子应变调节矿太阳能电池是如何使用的

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