Title |
Efficiency Enhancement of Perovskite Solar Cells by Pumping Away the Solvent of Precursor Film Before Annealing
|
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Published in |
Discover Nano, May 2016
|
DOI | 10.1186/s11671-016-1467-9 |
Pubmed ID | |
Authors |
Qing-Yang Xu, Da-Xing Yuan, Hao-Ran Mu, Femi Igbari, Qiaoliang Bao, Liang-Sheng Liao |
Abstract |
A new approach to improve the quality of MAPbI3 - x Cl x perovskite film was demonstrated. It involves annealing the precursor film after pumping away the solvent, which can decrease the influence of solvent evaporation rate for the growth of the MAPbI3 - x Cl x perovskite film. The resulting film showed improved morphology, stronger absorption, fewer crystal defects, and smaller charge transfer resistance. The corresponding device demonstrated enhanced performance when compared with a reference device. The averaged value of power conversion efficiency increased from 10.61 to 12.56 %, and a champion efficiency of 14.0 % was achieved. This work paves a new way to improve the efficiency of perovskite solar cells. |
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