Reducing lead toxicity of perovskite solar cells with a built-in supramolecular complex

Meifang Yang, Tian Tian, Yuxuan Fang, Wen-Guang Li, Gengling Liu, Wenhuai Feng, Mingyi Xu and Wu-Qiang Wu ()
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Meifang Yang: Sun Yat-sen University
Tian Tian: Sun Yat-sen University
Yuxuan Fang: Sun Yat-sen University
Wen-Guang Li: Sun Yat-sen University
Gengling Liu: Sun Yat-sen University
Wenhuai Feng: Sun Yat-sen University
Mingyi Xu: Technical University of Denmark
Wu-Qiang Wu: Sun Yat-sen University

Nature Sustainability, 2023, vol. 6, issue 11, 1455-1464

Abstract: Abstract Perovskite solar cells (PSCs) as an emerging renewable energy technology are expected to play an important role in the transition to a sustainable future. However, lead toxicity of PSCs remains a major flaw hindering their large-scale implementation and compromising their sustainability, as lead is currently inevitable in making high-performance PSCs. Here we show that this can be addressed by embedding a cross-linking supramolecular complex composed of 2-hydroxypropyl β-cyclodextrin (HPβCD) and 1,2,3,4-butane tetracarboxylic acid (BTCA). The built-in HPβCD-BTCA complex can largely inhibit lead leakage from severely damaged PSCs, which retain 97% of the initial efficiency after 522 h dynamic water scouring, with only

Date: 2023
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DOI: 10.1038/s41893-023-01181-x

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