title: Chlorine Incorporation for Enhanced Performance of Planar Perovskite Solar Cell Based on Lead Acetate Precursor.
abstract: We show the effects of chlorine incorporation in the crystallization process of perovskite film based on a lead acetate precursor. We demonstrate a fabrication process for fast grain growth with highly preferred {110} orientation upon only 5 min of annealing at 100 °C. By studying the correlation between precursor composition and morphology, the growth dynamic of perovskite film in the current system is discussed. In particular, we found that both lead acetate precursor and Cl incorporation are beneficial to perovskite growth. While lead acetate allows fast crystallization process, Cl improves perovskite crystallinity. Planar perovskite solar cells with optimized parameters deliver a best power conversion efficiency of 15.0% and average efficiency of 14.0% with remarkable reproducibility and good stability.
authors.affiliation: Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong , Hong Kong SAR, P.R. China.|Department of Physics and Materials Science, City University of Hong Kong , Hong Kong SAR, P.R. China.
authors.forename: Jian
authors.initials: J
authors.lastname: Qing
authors.affiliation: Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong , Hong Kong SAR, P.R. China.|Department of Physics and Materials Science, City University of Hong Kong , Hong Kong SAR, P.R. China.
authors.forename: Hrisheekesh-Thachoth
authors.initials: HT
authors.lastname: Chandran
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong , Hong Kong SAR, P.R. China.
authors.forename: Yuan-Hang
authors.initials: YH
authors.lastname: Cheng
authors.affiliation: Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong , Hong Kong SAR, P.R. China.|Department of Physics and Materials Science, City University of Hong Kong , Hong Kong SAR, P.R. China.
authors.forename: Xiao-Ke
authors.initials: XK
authors.lastname: Liu
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong , Hong Kong SAR, P.R. China.
authors.forename: Ho-Wa
authors.initials: HW
authors.lastname: Li
authors.affiliation: Department of Physics and Materials Science, City University of Hong Kong , Hong Kong SAR, P.R. China.
authors.forename: Sai-Wing
authors.initials: SW
authors.lastname: Tsang
authors.affiliation: Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong , Hong Kong SAR, P.R. China.|Department of Physics and Materials Science, City University of Hong Kong , Hong Kong SAR, P.R. China.|City University of Hong Kong Shenzhen Research Institute , Shenzhen 518057, Guangdong, P.R. China.
authors.forename: Ming-Fai
authors.initials: MF
authors.lastname: Lo
authors.affiliation: Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong , Hong Kong SAR, P.R. China.|Department of Physics and Materials Science, City University of Hong Kong , Hong Kong SAR, P.R. China.|City University of Hong Kong Shenzhen Research Institute , Shenzhen 518057, Guangdong, P.R. China.
authors.forename: Chun-Sing
authors.initials: CS
authors.lastname: Lee
keywords: chlorine incorporation; crystallinity; grain size; lead acetate; perovskite solar cells; solvent annealing