title: On-Chip Integrated, Silicon-Graphene Plasmonic Schottky Photodetector with High Responsivity and Avalanche Photogain.
abstract: We report an on-chip integrated metal graphene-silicon plasmonic Schottky photodetector with 85 mA/W responsivity at 1.55 μm and 7% internal quantum efficiency. This is one order of magnitude higher than metal-silicon Schottky photodetectors operated in the same conditions. At a reverse bias of 3 V, we achieve avalanche multiplication, with 0.37A/W responsivity and avalanche photogain ∼2. This paves the way to graphene integrated silicon photonics.
authors.affiliation: Cambridge Graphene Centre, University of Cambridge , 9 JJ Thomson Avenue, Cambridge CB3 OFA, U.K.
authors.forename: Ilya
authors.initials: I
authors.lastname: Goykhman
authors.affiliation: Cambridge Graphene Centre, University of Cambridge , 9 JJ Thomson Avenue, Cambridge CB3 OFA, U.K.
authors.forename: Ugo
authors.initials: U
authors.lastname: Sassi
authors.affiliation: Department of Applied Physics, The Benin School of Engineering and Computer Science, The Hebrew University , Jerusalem 91904, Israel.
authors.forename: Boris
authors.initials: B
authors.lastname: Desiatov
authors.affiliation: Department of Applied Physics, The Benin School of Engineering and Computer Science, The Hebrew University , Jerusalem 91904, Israel.
authors.forename: Noa
authors.initials: N
authors.lastname: Mazurski
authors.affiliation: Cambridge Graphene Centre, University of Cambridge , 9 JJ Thomson Avenue, Cambridge CB3 OFA, U.K.
authors.forename: Silvia
authors.initials: S
authors.lastname: Milana
authors.affiliation: Cambridge Graphene Centre, University of Cambridge , 9 JJ Thomson Avenue, Cambridge CB3 OFA, U.K.
authors.forename: Domenico
authors.initials: D
authors.lastname: de Fazio
authors.affiliation: Cambridge Graphene Centre, University of Cambridge , 9 JJ Thomson Avenue, Cambridge CB3 OFA, U.K.
authors.forename: Anna
authors.initials: A
authors.lastname: Eiden
authors.affiliation: Department of Electrical and Computer Engineering, Johns Hopkins University , Baltimore, Maryland 21218, United States.
authors.forename: Jacob
authors.initials: J
authors.lastname: Khurgin
authors.affiliation: Department of Applied Physics, The Benin School of Engineering and Computer Science, The Hebrew University , Jerusalem 91904, Israel.
authors.forename: Joseph
authors.initials: J
authors.lastname: Shappir
authors.affiliation: Department of Applied Physics, The Benin School of Engineering and Computer Science, The Hebrew University , Jerusalem 91904, Israel.
authors.forename: Uriel
authors.initials: U
authors.lastname: Levy
authors.affiliation: Cambridge Graphene Centre, University of Cambridge , 9 JJ Thomson Avenue, Cambridge CB3 OFA, U.K.
authors.forename: Andrea C
authors.initials: AC
authors.lastname: Ferrari
keywords: Graphene; avalanche multiplication; photodetectors; silicon photonics