title: Fast P3HT Exciton Dissociation and Absorption Enhancement of Organic Solar Cells by PEG-Functionalized Graphene Quantum Dots.
abstract: PEG-functionalized graphene quantum dots (GQDs) are shown to promote fast exciton dissociation in organic solar cells. Short-chain PEG promotes the most favorable interaction with other organic layers, and the overall efficiency is improved by 36% when compared to the reference devices. The mechanism of enhancement is shown to be increased absorption due to fewer charges remain-ing in the bound state.
authors.affiliation: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, South Korea.
authors.forename: Travis G
authors.initials: TG
authors.lastname: Novak
authors.affiliation: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, South Korea.
authors.forename: Jungmo
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, South Korea.
authors.forename: Sung Ho
authors.initials: SH
authors.lastname: Song
authors.affiliation: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, South Korea.
authors.forename: Gwang Hoon
authors.initials: GH
authors.lastname: Jun
authors.affiliation: Department of Energy Science, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, South Korea.
authors.forename: Hyojung
authors.initials: H
authors.lastname: Kim
authors.affiliation: Department of Energy Science, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 440-746, South Korea.
authors.forename: Mun Seok
authors.initials: MS
authors.lastname: Jeong
authors.affiliation: Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, South Korea.
authors.forename: Seokwoo
authors.initials: S
authors.lastname: Jeon
keywords: functionalization; graphene; organic solar cells; quantum dots; transient absorption