title: Suppressed charge recombination in inverted organic photovoltaics via enhanced charge extraction by using a conductive fullerene electron transport layer.
abstract: Conductive fullerene electron-transporting layers (ETLs) are developed to facilitate the solution processing of highly efficient inverted OSCs with power conversion efficiency (PCE) reaching 9.6%. Its high conductivity also allows devices to be fabricated independently of the ETL thickness (up to ca. 50 nm). Transient photovoltage (TPV) measurements are used to shed light on how these conductive ETLs help suppress charge recombination in solar cells.
authors.affiliation: Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195, USA.
authors.forename: Chang-Zhi
authors.initials: CZ
authors.lastname: Li
authors.forename: Chih-Yu
authors.initials: CY
authors.lastname: Chang
authors.forename: Yue
authors.initials: Y
authors.lastname: Zang
authors.forename: Huan-Xin
authors.initials: HX
authors.lastname: Ju
authors.forename: Chu-Chen
authors.initials: CC
authors.lastname: Chueh
authors.forename: Po-Wei
authors.initials: PW
authors.lastname: Liang
authors.forename: Namchul
authors.initials: N
authors.lastname: Cho
authors.forename: David S
authors.initials: DS
authors.lastname: Ginger
authors.forename: Alex K-Y
authors.initials: AK
authors.lastname: Jen
keywords: Inverted organic solar cell; electron transport layer; fullerene; recombination; transient photovoltage