20-mm-Large Single-Crystalline Formamidinium-Perovskite Wafer for Mass Production of Integrated Photodetectors

CH3NH3PbX3 (MAPbX3)‐based perovskite has attracted tremendous research efforts in the last few years. With the discovery that the HC(NH2)2PbI3 (FAPbI3) perovskite offers even higher solar cell efficiency, better thermal stability, and broader optical absorption, it is expected that it will provide m...

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Bibliographic Details
Published in:Advanced optical materials 2016-11, Vol.4 (11), p.1829-1837
Main Authors: Liu, Yucheng, Sun, Jiankun, Yang, Zhou, Yang, Dong, Ren, Xiaodong, Xu, Hua, Yang, Zupei, Liu, Shengzhong (Frank)
Format: Article
Language:English
Subjects:
Arrays
Crystallization
formamidinium
Integrated circuits
integrated photodetectors
Mass production
Optics
Perovskites
Photodetectors
single crystal wafers
Single crystals
Wafers
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Summary:CH3NH3PbX3 (MAPbX3)‐based perovskite has attracted tremendous research efforts in the last few years. With the discovery that the HC(NH2)2PbI3 (FAPbI3) perovskite offers even higher solar cell efficiency, better thermal stability, and broader optical absorption, it is expected that it will provide more excitement in optoelectronic applications including laser, LED, photodetector, etc. The development in preparing large Single‐Crystalline Formamidinium‐Perovskite FAPbI3 using the inverse‐temperature reactive crystallization process, and associated wafer‐slicing process is presented. The availability of the large Single‐Crystalline Formamidinium‐Perovskite Wafer makes it possible to fabricate integrated circuits. An array of 153 photodetectors on a piece of thin wafer, demonstrating feasibility of mass production of integrated circuits on the perovskite wafer is designed and prepared. It is found that the wafer‐based photodetector shows much superior performance, with 90 times higher photoresponse and broader optical absorption than its thin‐film perovskite counterpart. Large formamidinium‐perovskite FAPbI3 single‐crystals are prepared using an inverse‐temperature reactive crystallization method. The large crystals are sliced into wafers to fabricate a large array of photodetectors. It is found that the wafer‐based photodetector shows a much superior performance than that made of microcrystalline thin films.
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.201600327