Berlin 2015 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 58: OFETs, OLEDs, and organic optoelectronics
HL 58.2: Talk
Wednesday, March 18, 2015, 16:45–17:00, EW 202
Modulating 2D material optoelectronics through photochromic self-assembled monolayers — •Juan Li1, Carlos-Andres Palma1, Jakob Wierzbowski1,2, Julian Klein1,2, Filippo Nisic3, Mahmoud M. Asmar4, Sergio E. Ulloa4, Claudia Dragonetti3, Jonathan J. Finley1,2, Emanuela Margapoti1,2, and Johannes V. Barth Barth1 — 1Physik-Department,Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany — 2Walter Schottky Institut,Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany — 3Dipartimento di Chimica, Università degli Studi di Milano and UdR dell*INSTM di Milano, Via Golgi 19, I-20133 Milano, Italy — 4Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany
The recent spotlight on highly crystalline natural-occurring and synthetic two-dimensional materials (2DMs) stands as a unique opportunity to accelerate atomically-precise technology made of complex 2DM and molecular architectures. Here we explore the modulation of the optoelectronic properties of graphene and molybdenum disulfide (MoS2) by means of azobenzene self-assembled monolayers platforms. We present (a) the emergence of photoswitchable bound states in graphene (b) photoswitchable rectification and (c) tuning of the photoluminescence yield on MoS2. Our results pave the way toward hybrid molecular/2DM (opto)electronic technology.