Speaker
Dr
Aleksandar Matković
(Institute of Physics, Montanuniversität Leoben)
Description
In this study, we examine charge transfer between graphene and molecular semiconductors, parahexaphenyl and C60. Through in-situ measurements of the current, we directly probe the charge transfer as the interfacial dipole is formed. We demonstrate that adsorbed molecules do not affect electron scattering rates in graphene. However, the molecules introduce p-type doping with only about one thousandth of an electron transferred per molecule. In addition, we show results on charge trapping and light-assisted charge transfer within crystalline needles of polar pentacene derivate dihydrotetraazaheptacene, supported by hexagonal boron nitride and graphene.
Authors
Dr
Aleksandar Matković
(Institute of Physics, Montanuniversität Leoben)
Dr
Markus Kratzer
(Institute of Physics, Montanuniversität Leoben)
Mr
Jakob Genser
(Institute of Physics, Montanuniversität Leoben)
Mr
Benjamin Kaufmann
(Institute of Physics, Montanuniversität Leoben)
Ms
Jasna Vujin
(Institute of Physics, University of Belgrade)
Prof.
Radoš Gajić
(Institute of Physics, University of Belgrade)
Prof.
Peter Puschnig
(2Institute of Physics, Karl- Franzens-Universität Graz, NAWI Graz)
Prof.
Olivier Siri
(Aix-Marseille Université, CNRS, CINaM)
Prof.
Conrad Becker
(Aix-Marseille Université, CNRS, CINaM)
Prof.
Christian Teichert
(Institute of Physics, Montanuniversität Leoben)
