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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
Graphdiyne-Doped P3CT-K as an Efficient Hole-Transport Layer for MAPbI3 Perovskite Solar Cells
Jiangsheng Li1, Min Zhao1, Chengjie Zhao1
1Qingdao Institute of Bioenergy and Bioprocess Technology (QIBEBT) , Chinese Academy of Sciences , Qingdao 266101 , P. R. China.
Abstract:
Here we reported the doping of graphdiyne in P3CT-K in MAPbI3 perovskite solar cells as hole-transport materials. The doping could improve the surface wettability of P3CT-K, and the resulting perovskite morphology was improved with homogeneous coverage and reduced grain boundaries. Simultaneously, it increased the hole-extraction mobility and reduced the recombination as well as improved the performance of devices. Therefore, a high efficiency of 19.5% was achieved based on improved short-circuit current and fill factor. In addition, hysteresis of the J- V curve was also obviously reduced. This work paves the way for the development of highly efficient perovskite solar cells.
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