title: Photoresponse of supramolecular self-assembled networks on graphene-diamond interfaces.
abstract: Nature employs self-assembly to fabricate the most complex molecularly precise machinery known to man. Heteromolecular, two-dimensional self-assembled networks provide a route to spatially organize different building blocks relative to each other, enabling synthetic molecularly precise fabrication. Here we demonstrate optoelectronic function in a near-to-monolayer molecular architecture approaching atomically defined spatial disposition of all components. The active layer consists of a self-assembled terrylene-based dye, forming a bicomponent supramolecular network with melamine. The assembly at the graphene-diamond interface shows an absorption maximum at 740 nm whereby the photoresponse can be measured with a gallium counter electrode. We find photocurrents of 0.5 nA and open-circuit voltages of 270 mV employing 19 mW cm(-2) irradiation intensities at 710 nm. With an ex situ calculated contact area of 9.9 × 10(2) μm(2), an incident photon to current efficiency of 0.6% at 710 nm is estimated, opening up intriguing possibilities in bottom-up optoelectronic device fabrication with molecular resolution.
authors.affiliation: Chemie-Department, Technische Universität München, Lichtenbergstraße 4, Garching 85748, Germany.|Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, Garching 85748, Germany.
authors.forename: Sarah
authors.initials: S
authors.lastname: Wieghold
authors.affiliation: Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, Garching 85748, Germany.|Physik-Department, Technische Universität München, James-Franck-Strasse 1, Garching 85748, Germany.
authors.forename: Juan
authors.initials: J
authors.lastname: Li
authors.affiliation: Physik-Department, Technische Universität München, James-Franck-Strasse 1, Garching 85748, Germany.|Walter Schottky Institut, Technische Universität München, Am Coulombwall 4, Garching 85748, Germany.
authors.forename: Patrick
authors.initials: P
authors.lastname: Simon
authors.affiliation: Chemie-Department, Technische Universität München, Lichtenbergstraße 4, Garching 85748, Germany.|Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, Garching 85748, Germany.
authors.forename: Maximilian
authors.initials: M
authors.lastname: Krause
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany.
authors.forename: Yuri
authors.initials: Y
authors.lastname: Avlasevich
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany.
authors.forename: Chen
authors.initials: C
authors.lastname: Li
authors.affiliation: Physik-Department, Technische Universität München, James-Franck-Strasse 1, Garching 85748, Germany.|Walter Schottky Institut, Technische Universität München, Am Coulombwall 4, Garching 85748, Germany.
authors.forename: Jose A
authors.initials: JA
authors.lastname: Garrido
authors.affiliation: Chemie-Department, Technische Universität München, Lichtenbergstraße 4, Garching 85748, Germany.|Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, Garching 85748, Germany.
authors.forename: Ueli
authors.initials: U
authors.lastname: Heiz
authors.affiliation: ISIS &icFRC, Université de Strasbourg &CNRS, 8 allée Gaspard Monge, Strasbourg 67000, France.
authors.forename: Paolo
authors.initials: P
authors.lastname: Samorì
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany.
authors.forename: Klaus
authors.initials: K
authors.lastname: Müllen
authors.affiliation: Chemie-Department, Technische Universität München, Lichtenbergstraße 4, Garching 85748, Germany.|Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, Garching 85748, Germany.
authors.forename: Friedrich
authors.initials: F
authors.lastname: Esch
authors.affiliation: Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, Garching 85748, Germany.|Physik-Department, Technische Universität München, James-Franck-Strasse 1, Garching 85748, Germany.
authors.forename: Johannes V
authors.initials: JV
authors.lastname: Barth
authors.affiliation: Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, Garching 85748, Germany.|Physik-Department, Technische Universität München, James-Franck-Strasse 1, Garching 85748, Germany.
authors.forename: Carlos-Andres
authors.initials: CA
authors.lastname: Palma