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conferenceseries.com
RRJOMS | Volume 5 | Issue 4 | July, 2017
July 27-29, 2017 Vancouver, Canada
10th International Conference on
Emerging Materials and Nanotechnology
Engineering graphene and TMDCs for nanoelectronic device applications
Moon-Ho Ham
Gwangju Institute of Science and Technology, Korea
Two-dimensional (2D) materials such as graphene and transition metal dichalcogenides (TMDCs) have unique physical and
electrical properties. There is currently an interest in taking advantage of these properties for future electronic applications. In
this talk, I will first introduce a modified chemical vapor deposition (CVD) technique to produce large-area, high-quality continuous
monolayer graphene films from benzene on Cu at 100–300°C at ambient pressure. In this method, we extended the graphene growth
step in the absence of residual oxidizing species by introducing pumping and purging cycles prior to growth. Further, Cu/graphene
stacked interconnects are fabricated by directly synthesizing graphene onto Cu interconnects using this method, which show the
improved electrical properties compared to Cu interconnects. In the second part, I will present a simple and facile route to reversible
and controllable modulation of the electrical and optical properties of WS2 and MoS2 via hydrazine doping and sulfur annealing.
Hydrazine treatment of TMDSs improves the field-effect mobilities and photo-responsivities of the devices. These changes are
fully recovered via sulfur annealing. This may enable the fabrication of 2D electronic and optoelectronic devices with improved
performance.
Biography
Moon-Ho Ham is an Associate Professor in the Department of Materials Science and Engineering at Gwangju Institute of Science and Technology (GIST), South
Korea. He has received his BS and PhD degrees in Materials Science and Engineering at Yonsei University, South Korea. He was a Post-doctoral Associate in
Chemical Engineering at Massachusetts Institute of Technology. His research focuses on nanomaterials including nanocarbon and 2D materials for nanoelectronic
and energy applications.
Moon-Ho Ham, Res. Rev. J Mat. Sci. 2017
DOI: 10.4172/2321-6212-C1-002