title: Self-Assembled Poly(3,4-ethylene dioxythiophene):Poly(styrenesulfonate)/Graphene Quantum Dot Organogels for Efficient Charge Transport in Photovoltaic Devices.
abstract: We report the self-assembly of poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) (
  PSS) organogel films incorporating graphene quantum dots (GQDs). Because of the electrostatic interaction between the GQDs and the PEDOT chains, GQD@PEDOT core-shell nanostructures are readily formed. We demonstrate that the GQDs affect the reorientation of PEDOT chains and the formation of interconnected structure of PEDOT-rich domains, improving the charge transport pathway. The power conversion efficiency of the organic photovoltaic device containing the self-assembled organogel as the hole extraction layer (HEL) was 26% higher than the device with pristine PEDOT-PSS as the HEL.
authors.forename: Hong Chul
authors.initials: HC
authors.lastname: Lim
authors.affiliation: §Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea.
authors.forename: Sa Hoon
authors.initials: SH
authors.lastname: Min
authors.forename: Eunwoo
authors.initials: E
authors.lastname: Lee
authors.forename: Jyongsik
authors.initials: J
authors.lastname: Jang
authors.forename: Sung Hyun
authors.initials: SH
authors.lastname: Kim
authors.forename: Jong-In
authors.initials: JI
authors.lastname: Hong
keywords: PEDOT:PSS; graphene quantum dots; organic photovoltaics; organogel; self-assembly