High‐Performance Planar Perovskite Solar Cells Using Low Temperature,Solution–Combustion‐Based Nickel Oxide Hole Transporting Layer with Efficiency Exceeding 20% |
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| Authors: | Ziye Liu Jingjing Chang Zhenhua Lin Long Zhou Zhou Yang Dazheng Chen Chunfu Zhang Shengzhong Liu Yue Hao |
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| Institution: | 1. State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, Shaanxi Joint Key Laboratory of Graphene, School of Microelectronics, Xidian University, Xi'an, China;2. Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, China |
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| Abstract: | NiOx hole transporting layer has been extensively studied in optoelectronic devices. In this paper, the low temperature, solution–combustion‐based method is employed to prepare the NiOx hole transporting layer. The resulting NiOx thin films show better quality and preferable energy alignment with perovskite thin film compared to high temperature sol–gel‐processed NiOx. With this, high‐performance perovskite solar cells are fabricated successfully with power conversion efficiency exceeding 20% using a modified two‐step prepared MA1?yFAyPbI3?xClx perovskite. This efficiency value is among the highest values for NiOx‐based devices. Various characterizations and analyses provide evidence of better film quality, enhanced charge transport and extraction, and suppressed charge recombination. Meanwhile, the device exhibits much better device stability compared to sol–gel‐processed NiOx and poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate)‐based devices. |
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| Keywords: | high efficiency low temperature NiOx HTL perovskite solar cells solution– combustion |
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