Vacancy healing for stable perovskite solar cells via bifunctional potassium tartrate

被引：10

作者：

Dou, Jing ^{[1
]}

Ma, Yue ^{[2
]}

Niu, Xiuxiu ^{[1
]}

Zhou, Wentao ^{[2
]}

Wei, Xueyuan ^{[1
]}

Dou, Jie ^{[1
]}

Cui, Zhenhua ^{[1
]}

Song, Qizhen ^{[1
]}

Song, Tinglu ^{[1
]}

Zhou, Huanping ^{[2
]}

Zhu, Cheng ^{[1
]}

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] Peking Univ, Sch Mat Sci & Engn, Beijing Key Lab Theory & Technol Adv Battery Mat, Key Lab Polymer Chem & Phys,Minist Educ,BIC ESAT, Beijing 100871, Peoples R China

来源：

JOURNAL OF ENERGY CHEMISTRY | 2024年 / 88卷

基金：

中国国家自然科学基金;

关键词：

Perovskite; Potassium tartrate; Lead leakage; Long -term stability; HALIDE PEROVSKITES; PERFORMANCE; STABILITY;

D O I：

10.1016/j.jechem.2023.09.008

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Perovskite solar cell has gained widespread attention as a promising technology for renewable energy. However, their commercial viability has been hampered by their long-term stability and potential Pb leakage. Herein, we demonstrate a bifunctional passivator of the potassium tartrate (PT) to address both challenges. PT minimizes the Pb leakage in perovskites and also heals cationic vacancy defects, resulting in improved device performance and stability. Benefiting from PT modification, the power conversion efficiency (PCE) is improved to 23.26% and the Pb leakage in unencapsulated films is significantly reduced to 9.79 ppm. Furthermore, the corresponding device exhibits no significant decay in PCE after tracking at the maximum power point (MPP) for 2000 h under illumination (LED source, 100 mW cm-2).(c) 2023 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

引用

页码：64 / 70

页数：7

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