Stitching Perovskite Grains with Perhydropoly(Silazane)Anti-Template-Agent for High-Efficiency and Stable Solar Cells Fabricated in Ambient Air

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外文摘要：All inorganic CsPbl3 perovskite solar cells(PSCs)have emerged as disruptive photovoltaic technology owing to their admirable photoelectric properties and the non-volatile active layer.However,the phase instability against moisture severely limits the fabrication environment for the high-efficiency devices,breaking through the confinement region to achieve scalable manufacturing has been the primary issue for future commercialization.Here,we develop a curing-anti-solvent strategy for fabricating high-quality and stable black-phase CsPbl3 perovskite films in ambient air by introducing an inorganic polymer perhydropolysilazane(PHPS)into methyl acetate to form anti-template agent.The cross-linked PHPS reduces moisture erosions while the hydrolyzate silanol network(-Si(OH)4-)controls the perovskite crystal growth by forming Lewis adducts with Pbl2 during the fabrication.The polycondensation adduct of Si-O-Si/Si-O-Pb strongly binds to CsPbl3 grains as a shield layer to hamper phase transition.Using the inorganic CsPbl3 perovskite thin-film with PHPS-modified anti-solvent processing as the light absorber,the n-i-p planar solar cell achieved an efficiency of 19.17％under standard illumination test conditions.More importantly,the devices showed excellent moisture stability,retaining about 90％of the initial efficiency after 1000 h under 30％RH.

外文关键词：

anti-template agentcrystal growthperhydropolysilazaneperovskite solar cellsstability

作者：

Ting Wang、Qu Yang、Yanli Chen、Qiong Peng、Xiaosi Qi、Hui Shen、Xuncheng Liu、Shaohui Li、Haixuan Yu、Yan Shen、Mingkui Wang、Xiu Gong

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作者单位：

College of Physics,Guizhou Province Key Laboratory for Optoelectronic Technology and Application,Guizhou University,Guiyang 550025,China

College of Graduate Studies,Guizhou University,Guiyang 550025,China

College of Materials and metallurgy,Guizhou University,Guiyang 550025,China

School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China

Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China

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基金：

国家自然科学基金Natural Science Special(Special Post)Research Foundation of Guizhou Universitycultivation programs Research Foundation of Guizhou University

项目编号：

220050712020-132019-64

出版年：

2023

DOI：

10.1002/eem2.12554

能源与环境材料(英文)

CSCD

ISSN：

年,卷(期)：2023.6(3)

参考文献量48