title: Enhanced Efficiency and Stability of Perovskite Solar Cells via Anti-Solvent Treatment in Two-Step Deposition Method.
abstract: The low-cost inorganic-organic lead halide perovskite materials become particularly promising for solar cells with high photovoltaic conversion efficiency. The uniform and pinhole-free perovskite films play an important role for high-performance solar cells. We demonstrate an antisolvent treatment by controlling the PbI2morphology to enhance the perovskite conversion and photophysical properties, including high absorption, crystallinity, and rapid carrier transfer. The fabricated perovskite solar cells show tremendous PCE improvement to about 16.1% from 12% with less hysteresis, and retain over 90% initial PCE after 30 days in ambient and dark atmosphere. In prospect, this antisolvent treatment will be a feasible route to prepare high-quality perovskite films including favorite photophysical properties.
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Minghua
authors.initials: M
authors.lastname: Li
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Yan
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Kang
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Xinqin
authors.initials: X
authors.lastname: Liao
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zheng
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Pei
authors.identifier: http://orcid.org/0000-0002-3300-5241
authors.initials: P
authors.lastname: Lin
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Meng
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.|Beijing Municipal Key Laboratory of New Energy Materials and Technologies, University of Science and Technology Beijing , Beijing, 100083, China.
authors.forename: Yue
authors.identifier: http://orcid.org/0000-0001-7772-3280
authors.initials: Y
authors.lastname: Zhang
keywords: PbI2 morphology; TiO2/perovskite heterojunction; antisolvent treatment; perovskite solar cell; stability