title: High gain hybrid graphene-organic semiconductor phototransistors.
abstract: Hybrid phototransistors of graphene and the organic semiconductor poly(3-hexylthiophene-2,5-diyl) (P3HT) are presented. Two types of phototransistors are demonstrated with a charge carrier transit time that differs by more than 6 orders of magnitude. High transit time devices are fabricated using a photoresist-free recipe to create large-area graphene transistors made out of graphene grown by chemical vapor deposition. Low transit time devices are fabricated out of mechanically exfoliated graphene on top of mechanically exfoliated hexagonal boron nitride using standard e-beam lithography. Responsivities exceeding 10(5) A/W are obtained for the low transit time devices.
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.|‡Stichting Fundamenteel Onderzoek der Materie, P.O. Box 3021, 3502 GA Utrecht, The Netherlands.
authors.forename: Everardus H
authors.initials: EH
authors.lastname: Huisman
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors.forename: Artem G
authors.initials: AG
authors.lastname: Shulga
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.|‡Stichting Fundamenteel Onderzoek der Materie, P.O. Box 3021, 3502 GA Utrecht, The Netherlands.
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Zomer
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Tombros
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.|§Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands.
authors.forename: Davide
authors.initials: D
authors.lastname: Bartesaghi
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors.forename: Satria Zulkarnaen
authors.initials: SZ
authors.lastname: Bisri
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors.forename: Maria A
authors.initials: MA
authors.lastname: Loi
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors.forename: L Jan Anton
authors.initials: LJ
authors.lastname: Koster
authors.affiliation: †Zernike Institute for Advanced Materials, University of Gronigen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors.forename: Bart J
authors.initials: BJ
authors.lastname: van Wees
keywords: graphene; organic electronics; organic semiconductors; photoconductivity; photodetectors; phototransistors