title: Single-Crystal-like Perovskite for High-Performance Solar Cells Using the Effective Merged Annealing Method.
abstract: We report a simple, low cost, and quite effective method for achieving single-crystal-like CH3NH3PbI3perovskite leading to a significant enhancement in the performance and stability of inverted planar perovskite solar cells (IPSCs). By employing a merged annealing method during the fabrication of an IPSC for preparing the perovskite CH3NH3PbI3film, we remarkably increase the crystallinity of the CH3NH3PbI3film and enhance the device performance and stability. An IPSC with the indium tin oxide/poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)/CH3NH3PbI3(active layer)/[6,6]-phenyl-C61-butyric acid methyl ester/Al structure was fabricated using the merged annealing method and exhibited significantly enhanced performance with a high power conversion efficiency of 18.27% and a fill factor of 81.34%. Moreover, since two separate annealing processes are merged in the proposed annealing method, the fabrication step becomes much simpler and easier, leading to a reduction in fabrication costs.
authors.affiliation: Department of Physics, Pukyong National University , Busan 608-737, South Korea.|Hybrid Interface Materials Global Frontier Research Group, Pusan National University , Busan 608-737, South Korea.
authors.forename: Yanliang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Physics, Pukyong National University , Busan 608-737, South Korea.|Hybrid Interface Materials Global Frontier Research Group, Pusan National University , Busan 608-737, South Korea.
authors.forename: Insoo
authors.initials: I
authors.lastname: Shin
authors.affiliation: Advanced Photonics Research Institute, Gwangju Institute of Science and Technology , Gwangju 500-712, South Korea.
authors.forename: In-Wook
authors.initials: IW
authors.lastname: Hwang
authors.affiliation: Department of Physics, Pukyong National University , Busan 608-737, South Korea.
authors.forename: Seungmin
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Physics, Pukyong National University , Busan 608-737, South Korea.
authors.forename: Jihoon
authors.initials: J
authors.lastname: Lee
authors.affiliation: Department of Physics, Pukyong National University , Busan 608-737, South Korea.
authors.forename: Mi-Sun
authors.initials: MS
authors.lastname: Yang
authors.affiliation: Department of Medical Engineering, Inje University , Gyeongsangnam-Do 621749, South Korea.
authors.forename: Yun Kyung
authors.initials: YK
authors.lastname: Jung
authors.affiliation: Department of Physics, Pukyong National University , Busan 608-737, South Korea.
authors.forename: Jae-Won
authors.identifier: http://orcid.org/0000-0002-2162-4520
authors.initials: JW
authors.lastname: Jang
authors.affiliation: Department of Physics, Pukyong National University , Busan 608-737, South Korea.
authors.forename: Jung Hyun
authors.initials: JH
authors.lastname: Jeong
authors.affiliation: Department of Physics, Pukyong National University , Busan 608-737, South Korea.|Hybrid Interface Materials Global Frontier Research Group, Pusan National University , Busan 608-737, South Korea.
authors.forename: Sung Heum
authors.identifier: http://orcid.org/0000-0001-5701-660X
authors.initials: SH
authors.lastname: Park
authors.affiliation: Hybrid Interface Materials Global Frontier Research Group, Pusan National University , Busan 608-737, South Korea.
authors.forename: Kwang Ho
authors.initials: KH
authors.lastname: Kim
keywords: inverted planar perovskite solar cells; merged annealing; single-crystal-like perovskite grain; solution process; thermal stability