Efficient micrometer-scale thick-film perovskite solar cells with superior stability

Jian-Fei Hu ¹Gang Chen ¹Shun-Zhang Yu ¹Yue-Xin Lin ¹Kai-Yu Wang ¹Zong-Wei Li ¹Guo-Dong Zhang ¹Teng-Fei Pan ¹Ya-Jing Li ¹Ming-Jie Li ²Ying-Dong Xia ¹Yi-Fan Lv ¹Yong-Hua Chen³

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作者信息

1. Key Laboratory of Flexible Electronics(KLoFE)and Institute of Advanced Materials(IAM),School of Flexible Electronics (Future Technologies),Nanjing Tech University(NanjingTech),Nanjing 211816,China
2. Department of Applied Physics,The Hong Kong Polytechnic University,Hong Kong 999077,China;Shenzhen Research Institute,The Hong Kong Polytechnic University,Shenzhen 518057,China
3. Optics Valley Laboratory,Hubei 430074,China
折叠

Abstract

It is essential to enhance the thickness of the absorber layer for perovskite solar cells(PSCs)to improve device performance and reduce industry refinement.However,thick perovskite films(＞1 μm)are difficult to be fabricated by employing traditional solvents,such as N,N-dimethylformamide(DMF),dimethyl sulfoxide(DMSO).Besides,it is a challenge to fabricate thick-film perovskite owing to the deteriorated surface morphology and serious defect density.Herein,a simple method was reported to deposit uniform pinhole-free perovskite films with a thickness of more than 2 μm utilizing the methy-lamine acetate(MAAc)ionic liquid as the solvent.Com-bined with methylammonium chloride(MACl)as an additive,thick-film perovskite with～2 μm in grain size and few grain boundaries(GBs)was prepared,which dramatically improved the perovskite crystal quality and enhanced carrier transport performance.The final PSCs exhibited a power conversion efficiency(PCE)of 20.16％.The device showed improved stability with 95％of its initial efficiency in a nitrogen environment over 5000 h.This work provides an alternative strategy to produce extremely efficient and stable thick-film PSCs.It can be believed that this device has great potential in the appli-cation of large areas and laminated PSCs.

Key words

Perovskite solar cells/Thick-film/Stability/Ionic liquid

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基金项目

Natural Science Foundation of China(51972172)

Jiangsu Provincial Departments of Science and Technology(BE2022023)

Jiangsu Provincial Departments of Science and Technology(BK20220010)

Innovation Project of Optics Valley Laboratory(OVL2021BG006)

Open Project Program of Wuhan National Laboratory for Optoelectronics(2021WNLOKF003)

Young 1000 Talents Global Recruitment Program of China()

Natural Science Basic Research Plan in Shaanxi Province of China(2021JLM-43)

Joint Research Funds of Department of science and Technology of Shaanxi Province and Northwestern Polytechnical University(2020GXLH-Z-007)

Joint Research Funds of Department of science and Technology of Shaanxi Province and Northwestern Polytechnical University(2020GXLH-Z-014)

Jiangsu Excellent Postdoctoral Program()

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDCSCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量54

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