Journal
NANOSCALE RESEARCH LETTERS
Volume 11, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1186/s11671-016-1467-9
Keywords
Perovskite solar cells; Pump away the solvent; High-quality MAPbI(3-x)Cl(x) layer
Funding
- Youth 973 Program [2015CB932700]
- National Natural Science Foundation of China [51290273, 91433107, 61177016]
- Natural Science Foundation of Jiangsu Province [BK20130288]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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A new approach to improve the quality of MAPbI(3-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 MAPbI(3-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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