title: Thermally Induced Crystallization of High Quality CH3NH3PbI3Film with Large Grains for Highly Efficient Perovskite Solar Cells.
abstract: Recently, fully covered and smooth perovskite films could be fabricated by optimized coating methods; however, it is still hard to prepare perovskite films with large grain sizes and high crystallinity. Given the fact that thermal energy can promote crystallization, we combine high-temperature crystallization with the application of a solvent featuring a high boiling point, in order to produce high quality perovskite films with micrometer-sized grains. We further investigated the temperature dependence of the thermally induced synthetic strategy, whereby the grains become larger as the temperature is elevated. After solar cell device fabrication, the efficiency of the best cell can attain a high value of 15.53 % with reduced hysteresis behavior.
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.|Centre for Clean Environment and Energy, Gold Coast Campus, Griffith University, Queensland, 4222, Australia.
authors.forename: Yu
authors.initials: Y
authors.lastname: Hou
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
authors.forename: Shuang
authors.identifier: http://orcid.org/0000-0002-8244-3002
authors.initials: S
authors.lastname: Yang
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Chen
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
authors.forename: Chunzhong
authors.initials: C
authors.lastname: Li
authors.affiliation: Centre for Clean Environment and Energy, Gold Coast Campus, Griffith University, Queensland, 4222, Australia.
authors.forename: Huijun
authors.identifier: http://orcid.org/0000-0003-3794-4497
authors.initials: H
authors.lastname: Zhao
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.
authors.forename: Hua Gui
authors.initials: HG
authors.lastname: Yang
keywords: crystallization; micrometer size; perovskites; solar cells; thin films