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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

1
School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2
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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Abstract

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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