مارال پورخيابي

The discovery of two-dimensional graphene composed of carbon atoms with a honeycomb lattice, along with its unique features, has provided the ground for its study and application in science and industry. Progressive graphene electrical characteristics show that this material is working on micro- and nano-scale in electrical devices. In this study, graphene was produced through micromechanical exfoliation and chemical vapor deposition and transferred on flat insulating substrates with electrical contacts obtained via photolithography and stencil mask patterning methods. Electrical behavior of both graphene samples was investigated through electrical characterization such as voltage flow and resistance measurement. The quality of graphene transferred on the surface of the substrates was eva‎luated through optical microscopy, atomic force microscopy and Raman spectroscopy. Electrical characterization results showed single-layer graphene with linear I-V behavior and multi-layered graphene with nonlinear I-V behavior. The thickness of graphene, the method of patterning electrical contacts and the type of graphene transfer were primary factors that impacted graphene electrical behavior.

گرافن , مشخصه يابي الكتريكي , فتوليتوگرافي , ميكروشابلون , عايق تخت

Graphene , Electrical Properties , Photolithography , Micro-stencil , Flat insulators

Maral Pourkhiabi

Dr. Asieh Sadat Kazemi