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Crystals 2017, 7(9), 272; doi:10.3390/cryst7090272

CH3NH3Cl Assisted Solvent Engineering for Highly Crystallized and Large Grain Size Mixed-Composition (FAPbI3)0.85(MAPbBr3)0.15 Perovskites

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Clean Energy Research Institute, China Huaneng Group, Beijing 102209, China
Authors to whom correspondence should be addressed.
Academic Editor: Wei Zhang
Received: 17 July 2017 / Revised: 1 September 2017 / Accepted: 2 September 2017 / Published: 5 September 2017
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High-quality mixed-cation lead mixed-halide (FAPbI3)0.85(MAPbBr3)0.15 perovskite films have been prepared using CH3NH3Cl additives via the solvent engineering method. The UV/Vis result shows that the addition of additives leads to enhanced absorptions. XRD and SEM characterizations suggest that compact, pinhole-free and uniform films can be obtained. This is attributable to the crystallization improvement caused by the CH3NH3Cl additives. The power conversion efficiency (PCE) of the F-doped SnO2 (FTO)/compact-TiO2/perovskite/Spiro-OMeTAD/Ag device increases from 15.3% to 16.8% with the help of CH3NH3Cl additive. View Full-Text
Keywords: perovskite; mixed-cation; mixed-halide; additive; CH3NH3Cl; solvent engineering perovskite; mixed-cation; mixed-halide; additive; CH3NH3Cl; solvent engineering

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Li, Y.; Zhang, T.; Xu, F.; Wang, Y.; Li, G.; Yang, Y.; Zhao, Y. CH3NH3Cl Assisted Solvent Engineering for Highly Crystallized and Large Grain Size Mixed-Composition (FAPbI3)0.85(MAPbBr3)0.15 Perovskites. Crystals 2017, 7, 272.

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