PhD Candidate
GEORGIOS KOURMOULAKIS
geokourm@materials.uoc.gr
Phone
Office
Personal web page
Title
Optical and Electronic Properties of Transition Metal Dichalcogenides on Pre-patterned surfaces
Supervisor
KIOSEOGLOU GEORGIOS, Associate Professor, Materials Science & Technology Dept. - UOC
Committee Members
PELEKANOS NIKOLAOS, Professor, Materials Science & Technology Dept. - UOC
STRATAKIS EMMANOUIL, Researcher A, FORTH, Heraklion Crete GREECE
Abstract
Graphene is the first 2D material to be reported in 2004, although studies utilizing fewer and fewer layers of graphite were taking place for some time. This semimetal has amazing physical features like strength (strongest material measured), stretch (20% elasticity), stiffness (stiffer than diamond) and permeability (completely impermeable). In addition, graphene has high electric and thermal conductivity. However, being a semimetal, the lack of energy gap limits its usability in certain applications. Two-dimensional Transition Metal Dichalcogenides are qualified as the best semiconductor option for complementing graphene and creating a large family of materials that can be the foundation for next generation technologies. Features like strong photoluminescence under ambient conditions, high electrical and thermal conductivities and strong non-linear generated signals render these groups of materials essential tools for advanced sensors, photovoltaic panels and optoelectronic devices. The purpose of this thesis is to study the effect of patterns and pre-patterned substrates using characterization techniques like Photoluminescence and Raman Spectroscopy. We aim to obtain additional information on how to control and manipulate the optoelectronic properties of these 2D materials towards proposing applications in technological devices.