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

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

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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.

Perovskite solar cellsThick-filmStabilityIonic liquid

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

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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

Department of Applied Physics,The Hong Kong Polytechnic University,Hong Kong 999077,China

Shenzhen Research Institute,The Hong Kong Polytechnic University,Shenzhen 518057,China

Optics Valley Laboratory,Hubei 430074,China

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Natural Science Foundation of ChinaJiangsu Provincial Departments of Science and TechnologyJiangsu Provincial Departments of Science and TechnologyInnovation Project of Optics Valley LaboratoryOpen Project Program of Wuhan National Laboratory for OptoelectronicsYoung 1000 Talents Global Recruitment Program of ChinaNatural Science Basic Research Plan in Shaanxi Province of ChinaJoint Research Funds of Department of science and Technology of Shaanxi Province and Northwestern Polytechnical UniversityJoint Research Funds of Department of science and Technology of Shaanxi Province and Northwestern Polytechnical UniversityJiangsu Excellent Postdoctoral Program

51972172BE2022023BK20220010OVL2021BG0062021WNLOKF0032021JLM-432020GXLH-Z-0072020GXLH-Z-014

2024

10.1007/s12598-023-02529-0

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(4)
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