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HL: Fachverband Halbleiterphysik

HL 58: OFETs, OLEDs, and organic optoelectronics

HL 58.2: Vortrag

Mittwoch, 18. März 2015, 16:45–17:00, EW 202

Modulating 2D material optoelectronics through photochromic self-assembled monolayers — •Juan Li¹, Carlos-Andres Palma¹, Jakob Wierzbowski^1,2, Julian Klein^1,2, Filippo Nisic³, Mahmoud M. Asmar⁴, Sergio E. Ulloa⁴, Claudia Dragonetti³, Jonathan J. Finley^1,2, Emanuela Margapoti^1,2, 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.