title: A composite nanostructured electron-transport layer for stable hole-conductor free perovskite solar cells: design and characterization.
abstract: A novel composite nanostructured titanium dioxide (TiO2) based electron-transport layer (ETL) is designed by combining size blended nanoparticles (SBNP) and nanoarrays (NA) for efficient perovskite solar cell (PSC) applications. The composite nanostructured (SBNP + NA) ETL is successfully employed in hole-conductor free PSCs, there by achieving a stable device with a maximum efficiency of 13.5%. The improvement in the performance is attributed to the better charge transport and lower recombination in the SBNP + NA ETL. Despite the stable high efficiency, SBNP + NA ETL based PSCs are advantageous owing to their low cost, ease of all-solution fabrication process in an open environment and good reproducibility.
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn.
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Yu
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn.
authors.forename: Fei
authors.initials: F
authors.lastname: Qi
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn.
authors.forename: Pei
authors.initials: P
authors.lastname: Liu
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn.
authors.forename: Sujian
authors.initials: S
authors.lastname: You
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn.
authors.forename: Kiran Kumar
authors.initials: KK
authors.lastname: Kondamareddy
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn.
authors.forename: Changlei
authors.initials: C
authors.lastname: Wang
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn.
authors.forename: Nian
authors.initials: N
authors.lastname: Cheng
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn.
authors.forename: Sihang
authors.initials: S
authors.lastname: Bai
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn and Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education, Wuhan University, Wuhan 430072, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn and Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education, Wuhan University, Wuhan 430072, China.
authors.forename: Shishang
authors.initials: S
authors.lastname: Guo
authors.affiliation: School of Physics and Technology, Wuhan University, Wuhan 430072, China. wliu@whu.edu.cn guoshishang@hotmail.com xzzhao@whu.edu.cn and Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education, Wuhan University, Wuhan 430072, China.
authors.forename: Xing-zhong
authors.initials: XZ
authors.lastname: Zhao