title: One-step, solution-processed formamidinium lead trihalide (FAPbI(3-x)Cl(x)) for mesoscopic perovskite-polymer solar cells.
abstract: Formamidinium (FA) lead triiodide perovskite with chlorine addition (NH2CH=NH2PbI(3-x)Clx) is employed as a light harvester in mesoscopic solar cells for the first time. It is demonstrated that a phase-pure FAPbI(3-x)Clx perovskite layer can be synthesized using a one-step solution-process at 140 °C, and the resultant solar cells deliver a maximum power conversion efficiency of 7.51%, which is the most efficient formamidinium-lead-halide perovskite mesoscopic solar cell employing a polymer hole-transporting layer. The effects of the thermal annealing temperature on the quality/morphology of the perovskite layer and the solar cells performance are discussed. The advantages offered by the one-step solution-processing method and the reduced bandgap make FAPbI(3-x)Clx perovskites an attractive choice for future hybrid photovoltaics.
authors.affiliation: Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China. pangsp@qibebt.ac.cn cuigl@qibebt.ac.cn.
authors.forename: Siliu
authors.initials: S
authors.lastname: Lv
authors.forename: Shuping
authors.initials: S
authors.lastname: Pang
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Zhou
authors.forename: Nitin P
authors.initials: NP
authors.lastname: Padture
authors.forename: Hao
authors.initials: H
authors.lastname: Hu
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Xinhong
authors.initials: X
authors.lastname: Zhou
authors.forename: Huimin
authors.initials: H
authors.lastname: Zhu
authors.forename: Lixue
authors.initials: L
authors.lastname: Zhang
authors.forename: Changshui
authors.initials: C
authors.lastname: Huang
authors.forename: Guanglei
authors.initials: G
authors.lastname: Cui
mesh_terms: D000578:Amidines / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D011211:Electric Power Supplies; D007854:Lead / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D010087:Oxides / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012993:Solar Energy; D012996:Solutions; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D000578:Amidines; D017610:Calcium Compounds; D010087:Oxides; D011108:Polymers; D012996:Solutions; C059910:perovskite; D007854:Lead; C077922:formamidine; D014025:Titanium