title: Photoconductivity and enhanced memory effects in hybrid C60-graphene transistors.
abstract: We describe the observation of photoconductivity and enhanced memory effects in graphene devices functionalized with clusters of alkylated C(60) molecules. The alkylated C(60) clusters were adsorbed on chemical vapor deposition-grown graphene devices from an aprotic medium. The resulting alkylated C(60)-graphene hybrid devices showed reproducible photoconductive behavior originating from the electron-accepting nature of the C(60) molecules. Significantly enhanced gate hysteresis was observed upon illumination with visible light, thereby enabling the use of C(60)-graphene hybrid devices in three-terminal photo-memory applications.
authors.affiliation: Department of Physics, Chonbuk National University, Jeonju 561-756, Korea.
authors.forename: Eun-Kyoung
authors.initials: EK
authors.lastname: Jeon
authors.forename: Cheol-Soo
authors.initials: CS
authors.lastname: Yang
authors.forename: Yanfei
authors.initials: Y
authors.lastname: Shen
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakanishi
authors.forename: Dae-sung
authors.initials: DS
authors.lastname: Jeong
authors.forename: Ju-Jin
authors.initials: JJ
authors.lastname: Kim
authors.forename: Ki-suk
authors.initials: KS
authors.lastname: Ahn
authors.forename: Ki-jeong
authors.initials: KJ
authors.lastname: Kong
authors.forename: Jeong-O
authors.initials: JO
authors.lastname: Lee