1. Department of Chemical Engineering, Çankırı Karatekin University, 18100 Çankırı, Turkey
2. Chair of Electronic Devices, RWTH Aachen University, Otto-Blumenthal-Strasse 2, 52074 Aachen, Germany
3. Graphene & 2D-Materials Center, RWTH Aachen University, Templergraben 55, 52062 Aachen, Germany
4. AMO GmbH, Gesellschaft für Angewandte Mikro- und Optoelektronik mbH, Otto-Blumenthal-Straße 25, 52074 Aachen, Germany