title: Efficiency enhancement of planar perovskite solar cells by adding zwitterion/LiF double interlayers for electron collection.
abstract: Double interlayers consisting of a zwitterionic small molecule layer and a LiF layer were introduced between the electron transport layer and the cathode of perovskite solar cells. The double interlayers improve the photovoltaic efficiency to 13.2%, which is higher than that of control devices without the double interlayer (9.2%) or with LiF (11.0%) or rhodamine 101 zwitterion (12.1%) alone.
authors.affiliation: Department of Materials Science & Engineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574. mseoj@nus.edu.sg.
authors.forename: Kuan
authors.initials: K
authors.lastname: Sun
authors.forename: Jingjing
authors.initials: J
authors.lastname: Chang
authors.forename: Furkan Halis
authors.initials: FH
authors.lastname: Isikgor
authors.forename: Pengcheng
authors.initials: P
authors.lastname: Li
authors.forename: Jianyong
authors.initials: J
authors.lastname: Ouyang