title: Mixed Cation Thiocyanate-Based Pseudohalide Perovskite Solar Cells with High Efficiency and Stability.
abstract: Novel organic-inorganic hybrid perovskite compounds composed of mixed A-site cation (Formamidinium and Cesium) and pseudohalides (SCN and I) ions are successfully synthesized. These new classes of hybrid perovskites photovoltaics exhibited remarkable power conversion efficiency of more than 16% with excellent stability against moisture in ambient environment and under low-light storage condition. The existence of SCN-ion inclusion is confirmed by secondary ion mass spectrometry and Fourier transform infrared spectroscopy. The SCN--doped pseudohalide is advantageous for the formation of large perovskite grains, as well as the performance and stability of the device.
authors.affiliation: Department of Photonics, ‡Research Center for Energy Technology and Strategy (RCETS), and §Advanced Optoelectronics Technology Center (AOCT), National Cheng Kung University , Tainan 701, Taiwan.
authors.forename: Yu-Hsien
authors.initials: YH
authors.lastname: Chiang
authors.affiliation: Department of Photonics, ‡Research Center for Energy Technology and Strategy (RCETS), and §Advanced Optoelectronics Technology Center (AOCT), National Cheng Kung University , Tainan 701, Taiwan.
authors.forename: Ming-Hsien
authors.initials: MH
authors.lastname: Li
authors.affiliation: Department of Photonics, ‡Research Center for Energy Technology and Strategy (RCETS), and §Advanced Optoelectronics Technology Center (AOCT), National Cheng Kung University , Tainan 701, Taiwan.
authors.forename: Hsin-Min
authors.initials: HM
authors.lastname: Cheng
authors.affiliation: Department of Photonics, ‡Research Center for Energy Technology and Strategy (RCETS), and §Advanced Optoelectronics Technology Center (AOCT), National Cheng Kung University , Tainan 701, Taiwan.
authors.forename: Po-Shen
authors.initials: PS
authors.lastname: Shen
authors.affiliation: Department of Photonics, ‡Research Center for Energy Technology and Strategy (RCETS), and §Advanced Optoelectronics Technology Center (AOCT), National Cheng Kung University , Tainan 701, Taiwan.
authors.forename: Peter
authors.identifier: http://orcid.org/0000-0002-1743-7853
authors.initials: P
authors.lastname: Chen
keywords: dim-light; efficiency; high stability; mixed cation; perovskite solar cells; pseudohalide