Inkjet-Printing Controlled Phase Evolution Boosts the Efficiency of Hole Transport Material Free and Carbon-Based CsPbBr3 Perovskite Solar Cells Exceeding 9％

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外文摘要：Hole transport material free carbon-based all-inorganic CsPbBr3 perovskite solar cells(PSCs)are promising for commercialization due to its low-cost,high open-circuit voltage(Voc)and superior stability.Due to the different solubility of PbBr2 and CsBr in conventional solvents,CsPbBr3 films are mainly obtained by multi-step spin-coating through the phase evolution from PbBr2 to CsPb2Br5 and then to CsPbBr3.The scalable fabrication of high-quality CsPbBr3 films has been rarely studied.Herein,an inkjet-printing method is developed to prepare high-quality CsPbBr3 films.The formation of long-range crystalline CsPb2Br5 phase can effectively improve phase purity and promote regular crystal stacking of CsPbBr3.Consequently,the inkjet-printed CsPbBr3 C-PSCs realized PCEs up to 9.09％,8.59％and 7.81％with active areas of 0.09,0.25,and 1 cm2,respectively,demonstrating the upscaling potential of our fabrication method and devices.This high performance is mainly ascribed to the high purity,strong crystal orientation,reduced surface roughness and lower trap states density of the as-printed CsPbBr3 films.This work provides insights into the relationship between the phase evolution mechanisms and crystal growth dynamics of cesium lead bromide halide films.

外文关键词：

all-inorganic perovskite solar cellsCsPbBr3inkjet-printingphase evolution

作者：

Lihua Zhang、Shi Chen、Jie Zeng、Zhengyan Jiang、Qian Ai、Xianfu Zhang、Bihua Hu、Xingzhu Wang、Shihe Yang、Baomin Xu

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作者单位：

Department of Materials Science and Engineering and Shenzhen Engineering Research and Development Center for Flexible Solar Cells,Southern University of Science and Technology,Shenzhen 518055,China

Department of Chemistry,The Hong Kong University of Science and Technology,Clear Water Bay,Hong Kong,China

Henan Key Laboratory of Photovoltaic Materials,Henan University,Kaifeng 475004,China

Guangdong Key Lab of Nano-Micro Material Research,School of Chemical Biology and Biotechnology,Shenzhen Graduate School,Peking University,Shenzhen 518055,China

Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong,Southern University of Science and Technology,Shenzhen 518055,China

Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices,Southern University of Scie

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基金：

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaGuangdong Basic and Applied Basic Research FoundationGuangdong Basic and Applied Basic Research FoundationGuangdong Basic and Applied Basic Research FoundationShenzhen Science and Technology ProgramShenzhen Science and Technology ProgramHKRGC General Research FundsShenzhen & Hong Kong Joint Research ProgramShenzhen Engineering Research and Development Center for Flexible Solar Cells Project funding from Shenzhen Development and Key Fundamental Research Project funding from the Shenzhen Science and Technology Innovation CommitteeGuangdong-Hong Kong-Macao Joint Laboratory

项目编号：

2021YFB38001002021YFB380010162004089U2001217U19A20892019A15151104392019B15151200832022A1515011218JCYJ20190809150811504KQTD201503311018237016312216SGLH201806220924061302019-126JCYJ202001091410144742019B121205001

出版年：

2024

DOI：

10.1002/eem2.12543

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(2)