Rapid and Complete Conversion of CH3NH3PbI3 for Perovskite/C60 Planar-Heterojunction Solar Cells by Two-Step Deposition

In the present work,we proposed an improved two-step deposition method by optimizing the reaction temperature and the dipping time for the fabrication ofperovskite films.The perovskite film fabricated at 70 ℃ exhibits a full surface coverage and a smooth uniform crystal morphology with a particle si...

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Bibliographic Details
Published in:Chinese journal of chemistry 2017-05, Vol.35 (5), p.687-692
Main Authors: Sun, Weihai, Li, Yunlong, Yan, Weibo, Peng, Haitao, Ye, Senyun, Rao, Haixia, Zhao, Ziran, Liu, Zhiwei, Bian, Zuqiang, Huang, Chunhui
Format: Article
Language:English
Subjects:
Deposition
Energy conversion efficiency
Fabrication
Heterojunctions
Optimization
perovskite solar cell
Perovskites
Photovoltaic cells
planar
Polystyrene resins
Solar cells
Styrene
two‐step deposition
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Summary:In the present work,we proposed an improved two-step deposition method by optimizing the reaction temperature and the dipping time for the fabrication ofperovskite films.The perovskite film fabricated at 70 ℃ exhibits a full surface coverage and a smooth uniform crystal morphology with a particle size up to micrometer scale.The corresponding inverted perovskite solar cell with a structure of ITO/poly（3,4-ethylenedioxythiophene）：poly（styrene-sulfonate）（PEDOT：PSS）/CH3NH3PbI3/C60/2,9-dimethyl-4,7-diphenyl-l,l 0-phenanthroline （BCP）/Ag displayed a higher power conversion efficiency（PCE）of 13.6%than that of the device fabricated at 20 ℃ （8.06%）,as well as the high reproducibility.The small but meaningful modification for two-step deposition would provide an efficient and convenient way to optimize planar perovskite solar cells and facilitate the potential applications of perovskite solar cells more widely.
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201600704