title: High-performance and environmentally stable planar heterojunction perovskite solar cells based on a solution-processed copper-doped nickel oxide hole-transporting layer.
abstract: An effective approach to significantly increase the electrical conductivity of a NiOx hole-transporting layer (HTL) to achieve high-efficiency planar heterojunction perovskite solar cells is demonstrated. Perovskite solar cells based on using Cu-doped NiOx HTL show a remarkably improved power conversion efficiency up to 15.40% due to the improved electrical conductivity and enhanced perovskite film quality. General applicability of Cu-doped NiOx to larger bandgap perovskites is also demonstrated in this study.
authors.affiliation: Department of Materials Science and Engineering, University of Washington, Seattle, Washington, 98195-2120, USA.
authors.forename: Jong H
authors.initials: JH
authors.lastname: Kim
authors.forename: Po-Wei
authors.initials: PW
authors.lastname: Liang
authors.forename: Spencer T
authors.initials: ST
authors.lastname: Williams
authors.forename: Namchul
authors.initials: N
authors.lastname: Cho
authors.forename: Chu-Chen
authors.initials: CC
authors.lastname: Chueh
authors.forename: Micah S
authors.initials: MS
authors.lastname: Glaz
authors.forename: David S
authors.initials: DS
authors.lastname: Ginger
authors.forename: Alex K-Y
authors.initials: AK
authors.lastname: Jen
keywords: air-stability; copper doping; hole-transporting material; nickel oxide; perovskite solar cells