INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Research Progresses on the Preparation Technologies Towards Large-area Perovskite Thin Films |
YANG Zhichun1,, WU Di1,2,, YAN Xiaobo1,2, JIANG Zhaoyi1, LIU Zonghao1, CHEN Wei1,2
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1 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China 2 China-EU Institute for Clean and Renewable Energy,Huazhong University of Science and Technology, Wuhan 430074, China |
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Abstract Organic-inorganic hybrid perovskite solar cells (PSCs) have attracted widespread attention due to their high power conversion efficiency (PCE) and low fabrication costs. Their excellent photoelectric performances are mainly attributed to the unique physical properties of perovskites, such as high light absorption coefficient, high carrier mobility, long carrier life, tunable band gap. They have quickly become a star of new-generation thin-film solar cells, because they can be manufactured on large scale via solution processing method. In the past decade, the PCE of small-area devices (<1 cm2) of PSCs has skyrocketed from 3.8% in 2009 to 25.2% now; the efficiency on small module-level device (10—800 cm2) has been increased to 18.04%; the PCE on module-level device (>800 cm2) has also been refreshed to 16.1%. One of the key factors for the performance mismatch between small-area and module-level devices is the limitation of the deposition methods for large-area perovskite thin films with high quality and uniformity. The general deposition method of perovskite films for small-area devices is spin-coating. However, this met-hod exhibits the disadvantages of uninform thickness and the waste of raw materials in scalable fabrication; so, it is not suitable for fabricating large-area perovskite thin films. Currently, the deposition scheme of large-area perovskite thin films is under diversified research, and the stable industrial production scale has not yet been formed. So far, the mainly reported methods of the deposition of large-area perovskite films including doctor blading, slot-die coating, spraying coating, inkjet printing, soft-cover deposition and the vacuum vapor deposition. This review has summarized the recent research progresses on the preparation methods of large-area perovskite thin films; the basic deposition principles as well as the advantages and disadvantages of various deposition technologies have also been introduced. Finally, the problems they will be faced in the follo-wing study and in the process of industrialization have been outlined, aiming at improving the understanding of the deposition methods of large-area perovskite thin films for readers and providing useful reference for the study of large-area and high-efficiency perovskite solar modules.
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Published: 19 January 2021
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Fund:This work was financially supported by the National Natural Science Foundation of China (General Program, Key Program, Major Research Plan) (51672094,51861145404,51822203). |
About author:: Zhichun Yang received his B.S. degree in physics in 2014 from Yun Cheng University, China, and his M.S. degree in condensed matter physics in 2017 from Huazhong University of Science and Technology, China. He is currently a Ph.D. candidate at Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology. His research mainly focuses on large-area perovskite solar cells and modules. Di Wu received his B.S. degree in physics from Yangtze University in 2017. He is Currently pursuing his master degree at China-EU Institute for Clean and Renewable Energy, Huazhong University of Science & Technology under the supervision of prof. Wei Chen who is from Wuhan National Laboratory for Optoelectronics. His research has focused on organic-inorganic hybrid perovskite solar cells, including the research of the interface modification, hole transport layer materials, the industrialization oriented large-area perovskite film forming process and so on. Zonghao Liu received his B.Sc. in 2011 and Ph.D. in 2016 from Huazhong University of Science and Techno-logy (HUST), China. He was a visiting student in University of California, Los Angeles, USA, in 2015. From 2016 to 2017, he was a research assistant in Peking University, China. From 2017—2019, he worked as a postdoctoral scholar at Okinawa Institute of Science and Technology Graduate University in Japan. He is currently an associate professor in Wuhan National Laboratory for Optoelectronics of HUST. His current research focuses on optoelectronics devices based on inorganic/organic perovskites, especially on perovskite solar cells. Wei Chen received his B.S. and Ph.D. degrees from the Department of Materials Science and Engineering, Tsinghua University. He worked as a Post-Doctoral Fellowship with the Department of Chemistry, Hong Kong University of Science and Technology (China), from 2008 to 2010. He was a Visiting Scholar with the National Institute for Materials Science, Japan, from 2014 to 2015. He is currently a Professor with the Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology. His research interests cover the synthesis, understanding, and applications of functional nanomaterials and semiconductor thin films in next generation solar cells, including PSCs. |
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