title: Solvent annealing of perovskite-induced crystal growth for photovoltaic-device efficiency enhancement.
abstract: Solvent-annealing is found to be an effective method to increase the grain size and carrier diffusion lengths of trihalide perovskite materials. The carrier diffusion length of MAPbI3 is increased to over 1 μm. The efficiency remains above 14.5% when the MAPbI3 thickness changes from 250 nm to 1 μm, with the highest efficiency reaching 15.6%.
authors.affiliation: Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, NE, 68588-0526, USA.
authors.forename: Zhengguo
authors.initials: Z
authors.lastname: Xiao
authors.forename: Qingfeng
authors.initials: Q
authors.lastname: Dong
authors.forename: Cheng
authors.initials: C
authors.lastname: Bi
authors.forename: Yuchuan
authors.initials: Y
authors.lastname: Shao
authors.forename: Yongbo
authors.initials: Y
authors.lastname: Yuan
authors.forename: Jinsong
authors.initials: J
authors.lastname: Huang
keywords: crystallinity; grain size; perovskite; solar cells; solvent annealing