Boosting the efficiency and stability of CsPbBr3 perovskite solar cells through modified multi-step spin-coating method

被引：10

作者：

Che, Guoliang ^{[1
]}

Wang, Xiying ^{[1
]}

Cui, Can ^{[1
]}

Pang, Beili ^{[1
,3
]}

Wang, Xinjie ^{[1
]}

Dong, Hongzhou ^{[1
]}

Feng, Jianguang ^{[1
]}

Yu, Liyan ^{[1
,3
]}

Dong, Lifeng ^{[1
,2
,3
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China

[2] Hamline Univ, Dept Phys, St Paul, MN 55104 USA

[3] 53 Zhengzhou Rd, Qingdao 266042, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 969卷

基金：

中国国家自然科学基金;

关键词：

Low concentration CsBr; Low concentration PbBr 2; Long-term stability; CsPbBr; 3; Perovskite solar cells; FILMS; CRYSTAL;

D O I：

10.1016/j.jallcom.2023.172423

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this research, we enhance the stability of all-inorganic CsPbBr3 perovskite solar cells using a modified multi-step spin-coating technique. By introducing low-concentration CsBr and PbBr2 in two additional steps, we achieve a PbBr2 layer with fewer pinholes, improved crystallinity, and a smoother surface. This promotes the formation of a high-quality CsPbBr3 film with larger grains by incorporating a derivative-phase CsPb2Br5. This film reduces interface defects, enhances grain growth, and boosts power conversion efficiency from 5.43% to 9.36%. Notably, unencapsulated devices maintain stable performance for over 2400 h in ambient air conditions.

引用

页数：9

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