title: An efficient planar-heterojunction solar cell based on wide-bandgap CH3NH3PbI2.1Br0.9 perovskite film for tandem cell application.
abstract: A dense and homogenous flat wide-bandgap (1.75 eV) CH3NH3PbI2.1Br0.9 perovskite film was prepared via a facile halide exchange route. The planar-heterojunction solar cell shows an optimal power conversion efficiency of 12.67% with negligible current hysteresis due to the film's large grains and vertically oriented grain boundaries.
authors.affiliation: National Laboratory of Solid State Microstructures & Eco-Materials and Renewable Energy Research Center (ERERC) at the Department of Physics, Nanjing University, Nanjing 210093, P. R. China. yutao@nju.edu.cn.
authors.forename: Weidong
authors.initials: W
authors.lastname: Zhu
authors.forename: Chunxiong
authors.initials: C
authors.lastname: Bao
authors.forename: Faming
authors.initials: F
authors.lastname: Li
authors.forename: Xiaoxin
authors.initials: X
authors.lastname: Zhou
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.forename: Tao
authors.initials: T
authors.lastname: Yu
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zou