title: Facile and Scalable Fabrication of Highly Efficient Lead Iodide Perovskite Thin-Film Solar Cells in Air Using Gas Pump Method.
abstract: Control of the perovskite film formation process to produce high-quality organic-inorganic metal halide perovskite thin films with uniform morphology, high surface coverage, and minimum pinholes is of great importance to highly efficient solar cells. Herein, we report on large-area light-absorbing perovskite films fabrication with a new facile and scalable gas pump method. By decreasing the total pressure in the evaporation environment, the gas pump method can significantly enhance the solvent evaporation rate by 8 times faster and thereby produce an extremely dense, uniform, and full-coverage perovskite thin film. The resulting planar perovskite solar cells can achieve an impressive power conversion efficiency up to 19.00% with an average efficiency of 17.38 ± 0.70% for 32 devices with an area of 5 × 2 mm, 13.91% for devices with a large area up to 1.13 cm(2). The perovskite films can be easily fabricated in air conditions with a relative humidity of 45-55%, which definitely has a promising prospect in industrial application of large-area perovskite solar panels.
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science & Engineering, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Ding
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science & Engineering, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
authors.forename: Lili
authors.initials: L
authors.lastname: Gao
authors.affiliation: Weihua Solar Co. Ltd. , Xiamen, 361115, People's Republic of China.
authors.forename: Lusheng
authors.initials: L
authors.lastname: Liang
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science & Engineering, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Chu
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science & Engineering, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
authors.forename: Xiaoxuan
authors.initials: X
authors.lastname: Song
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science & Engineering, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science & Engineering, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
authors.forename: Guanjun
authors.initials: G
authors.lastname: Yang
authors.affiliation: Weihua Solar Co. Ltd. , Xiamen, 361115, People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Fan
authors.affiliation: Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology , Luoyu Road 1037, Wuhan, 430074, People's Republic of China.
authors.forename: Mingkui
authors.initials: M
authors.lastname: Wang
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science & Engineering, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
authors.forename: Chengxin
authors.initials: C
authors.lastname: Li
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science & Engineering, Xi'an Jiaotong University , Xi'an, 710049, People's Republic of China.
authors.forename: Changjiu
authors.initials: C
authors.lastname: Li
keywords: facile; gas pump; highly efficient; perovskite; scalable; solar cell