Immobilizing Lead and Healing Surface Defects via Perfluorinated Tertiary Amine Molecules Enables High-Performance Sustainable Inverted Perovskite Solar Cells.

IF 27.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Pub Date : 2025-07-14 DOI:10.1002/adma.202508126

Zuolin Zhang,Jike Ding,Hao Liu,Chao Li,Mengjia Li,Thierry Pauporté,Jian-Xin Tang,Jiangzhao Chen,Cong Chen

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Abstract

The intrinsic instability and nonradiative recombination induced by surface defects hinder the further development of p-i-n inverted perovskite solar cells (PSCs). Simultaneously, the commercial application of inverted PSCs is limited by environmental unfriendliness resulting from lead leakage. Herein, a universal perfluorination strategy is reported to immobilize lead and passivate surface defects of perovskite films in inverted PSCs. It is demonstrated that perfluorinated perfluorotriethylamine (PFTEA) can form PFTEA·PbI2 complex with PbI2 via a strong coordination bond, which is favorable for suppressing lead leakage and promoting defect passivation. Due to much reduced surface nonradiative recombination, the PFTEA-modulated inverted PSCs deliver a fascinating certified stabilized power conversion efficiency (PCE) of 26.65%, a record efficiency value reported for PSCs using the vacuum flash evaporation technique. Moreover, the PFTEA-modulated devices maintain 92% of their initial PCE after 1000 h of continuous maximum power point tracking. This work provides a simple and effective avenue to advance the sustainable development of inverted photovoltaic technology through a perfluorination strategy.

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通过全氟叔胺分子固定化铅和修复表面缺陷实现高性能可持续的倒钙钛矿太阳能电池。

表面缺陷引起的内在不稳定性和非辐射复合阻碍了p-i-n倒钙钛矿太阳能电池的进一步发展。同时，由于铅泄漏导致的环境不友好性，限制了倒装型PSCs的商业应用。本文报道了一种通用的全氟化策略，用于固定化倒置聚碳酸酯中钙钛矿膜的铅和钝化表面缺陷。结果表明，全氟全氟三乙胺（PFTEA）可以通过强配位键与PbI2形成PFTEA·PbI2配合物，有利于抑制铅泄漏和促进缺陷钝化。由于大大减少了表面非辐射复合，pftea调制的倒转PSCs提供了令人瞩目的认证稳定功率转换效率（PCE），达到26.65%，这是使用真空闪蒸技术的PSCs的记录效率值。此外，pftea调制器件在连续最大功率点跟踪1000小时后保持其初始PCE的92%。这项工作为通过全氟化策略推进倒置光伏技术的可持续发展提供了一条简单有效的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Materials 工程技术-材料科学：综合

CiteScore

43.00

自引率

4.10%

发文量

2182

审稿时长

2 months

期刊介绍： Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.