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Efficient and Stable Inverted Perovskite Solar Modules Enabled by Solid-Liquid Two-Step Film Formation

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摘要 A considerable efficiency gap exists between large-area perovskite solar modules and small-area perovskite solar cells.The control of forming uniform and large-area film and perovskite crystallization is still the main obstacle restricting the efficiency of PSMs.In this work,we adopted a solid-liquid two-step film formation technique,which involved the evaporation of a lead iodide film and blade coating of an organic ammonium halide solution to prepare perovskite films.This method possesses the advantages of integrating vapor deposition and solution methods,which could apply to substrates with different roughness and avoid using toxic solvents to achieve a more uniform,large-area perovskite film.Furthermore,modification of the NiO_(x)/perovskite buried interface and introduction of Urea additives were utilized to reduce interface recombination and regulate perovskite crystallization.As a result,a large-area perovskite film possessing larger grains,fewer pinholes,and reduced defects could be achieved.The inverted PSM with an active area of 61.56 cm^(2)(10×10 cm^(2)substrate)achieved a champion power conversion efficiency of 20.56%and significantly improved stability.This method suggests an innovative approach to resolving the uniformity issue associated with large-area film fabrication.
出处 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第9期571-582,共12页 纳微快报(英文版)
基金 the financial support from Shanxi Province Science and Technology Department(20201101012,202101060301016) the support from the APRC Grant of the City University of Hong Kong(9380086) the TCFS Grant(GHP/018/20SZ) MRP Grant(MRP/040/21X)from the Innovation and Technology Commission of Hong Kong the Green Tech Fund(202020164)from the Environment and Ecology Bureau of Hong Kong the GRF grants(11307621,11316422)from the Research Grants Council of Hong Kong Guangdong Major Project of Basic and Applied Basic Research(2019B030302007) Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials(2019B121205002).
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