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Journal of Materials Science and Nanotechnology | Volume: 3
March 20-21, 2019 | London, UK
Materials Science and Materials Chemistry
2
nd
International Conference on
T
wo-dimensional (2D) materials, such as graphene and
monolayer transitional-metal-dichalcogenides (TMDs), have
aroused great attention due to the underlying fundamental
physics and the promising atomically-thin optoelectronic
applications. Optical properties of these 2D materials are
fundamentally interesting such as magneto-phonon resonance
in graphene and strong excitonic emission in monolayer
WS2. Meanwhile, development of practical optoelectronics
based on 2D materials is very promising, which opens
many opportunities for the next-generation light-emitting
applications such as valley light-emitting diodes and on-chip
vertical-cavity surface-emitting lasers (VCSELs). Here, we report
observations of magneto-phonon coupling effects in graphene
layers, wealthy excitonic emission states of monolayer WS2,
and 2D semiconductor lasing from monolayer WS2 embedded
VCSELs. Overall, our studies provide many new understandings
on fundamental light-matter interactions in atomically thin
materials and pave ways to develop industrially attractive light-
emitting applications based on 2D semiconductors.
Speaker Biography
Ting Yu received his PhD in Department of Physics, National University of Singapore
in 2003 and currently is a Professor in Division of Physics and Applied Physics,
Nanyang Technological University, Singapore. His research interests cover fabrication
of low dimensional, especially 2D materials and investigation of their optical,
optoelectrical and electrochemical properties for developing novel electronics,
optoelectronics and energy conversion/storage devices. Yu has published more
than 260 SCI papers and received over 18,500 non-self-citations. His H-index is 75.
e:
yuting@ntu.edu.sgTing Yu
Nanyang Technological University, Singapore
Light-matter interactions in 2DMaterials