title: High-performance perovskite CH3NH3PbI3 thin films for solar cells prepared by single-source physical vapour deposition.
abstract: In this work, an alternative route to fabricating high-quality CH3NH3PbI3 thin films is proposed. Single-source physical vapour deposition (SSPVD) without a post-heat-treating process was used to prepare CH3NH3PbI3 thin films at room temperature. This new process enabled complete surface coverage and moisture stability in a non-vacuum solution. Moreover, the challenges of simultaneously controlling evaporation processes of the organic and inorganic sources via dual-source vapour evaporation and the heating process required to obtain high crystallization were avoided. Excellent composition with stoichiometry transferred from the powder material, a high level of tetragonal phase-purity, full surface coverage, well-defined grain structure, high crystallization and reproducibility were obtained. A PCE of approximately 10.90% was obtained with a device based on SSPVD CH3NH3PbI3. These initial results suggest that SSPVD is a promising method to significantly optimize perovskite CH3NH3PbI3 solar cell efficiency.
authors.affiliation: Institute of Thin Film Physics and Applications, College of Physics and Energy, Shenzhen University, 518060, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Fan
authors.affiliation: Institute of Thin Film Physics and Applications, College of Physics and Energy, Shenzhen University, 518060, China.
authors.forename: Di
authors.initials: D
authors.lastname: Gu
authors.affiliation: Institute of Thin Film Physics and Applications, College of Physics and Energy, Shenzhen University, 518060, China.
authors.forename: Guang-Xing
authors.initials: GX
authors.lastname: Liang
authors.affiliation: Institute of Thin Film Physics and Applications, College of Physics and Energy, Shenzhen University, 518060, China.
authors.forename: Jing-Ting
authors.initials: JT
authors.lastname: Luo
authors.affiliation: Institute of Thin Film Physics and Applications, College of Physics and Energy, Shenzhen University, 518060, China.
authors.forename: Ju-Long
authors.initials: JL
authors.lastname: Chen
authors.affiliation: Institute of Thin Film Physics and Applications, College of Physics and Energy, Shenzhen University, 518060, China.
authors.forename: Zhuang-Hao
authors.initials: ZH
authors.lastname: Zheng
authors.affiliation: Institute of Thin Film Physics and Applications, College of Physics and Energy, Shenzhen University, 518060, China.
authors.forename: Dong-Ping
authors.initials: DP
authors.lastname: Zhang