Avoiding Structural Collapse to Reduce Lead Leakage in Perovskite Photovoltaics

被引：35

作者：

Wei, Xueyuan ^{[1
]}

Xiao, Mengqi ^{[1
]}

Wang, Boyu ^{[1
]}

Wang, Chenyue ^{[1
,2
]}

Li, Yuekang ^{[1
]}

Dou, Jing ^{[1
]}

Cui, Zhenhua ^{[1
]}

Dou, Jie ^{[1
]}

Wang, Hailiang ^{[3
]}

Ma, Sai ^{[1
]}

Zhu, Cheng ^{[1
]}

Yuan, Guizhou ^{[1
]}

Yang, Ning ^{[1
]}

Song, Tinglu ^{[1
]}

Zhou, Huanping ^{[4
]}

Chen, Haining ^{[3
]}

Bai, Yang ^{[1
]}

Chen, Qi ^{[1
]}

机构：

[1] Beijing Inst Technol, Expt Ctr Adv Mat, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201204, Peoples R China

[3] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[4] Peking Univ, Sch Mat Sci & Engn, Beijing 100871, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2022年 / 61卷 / 27期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Dissolution Behaviour; Long-Term Stability; Pb Leakage; Perovskite Solar Cells; Structural Collapse; SOLAR-CELLS; PASSIVATION; EFFICIENT;

D O I：

10.1002/anie.202204314

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Perovskite solar cells (PSCs) have become a promising candidate for the next-generation photovoltaic technologies. As an essential element for high-efficiency PSCs however, the heavy metal Pb is soluble in water, causing a serious threat to the environment and human health. Due to the weak ionic bonding in three-dimensional (3D) perovskites, drastic structure decomposition occurs when immersing the perovskite film in water, which accelerates the Pb leakage. By introducing the chemically stable Dion-Jacobson (DJ) 2D perovskite at the 3D perovskite surface, the film dissolution is significantly slowed down, which retards lead leakage. As a result, the Pb contamination is dramatically reduced under various extreme conditions. In addition, the PSCs device deliver a power conversion efficiency (PCE) of 23.6 % and retain over 95 % of their initial PCE after the maximum power point tracking for over 1100 h.

引用

页数：8

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