Two-dimensional TMDCs for their Electronic, Optoelectronic and Energy-related Applications
Date: 2022/11/18 - 2022/11/18
Academic Seminar: Two-dimensional TMDCs for their Electronic, Optoelectronic and Energy-related Applications
Speaker: Sangyeon Pak, Assistant Professor, School of Electronic and Electrical Engineering at Hongik University (Korea)
Time: 10:00 - 11:30, November 18, 2022 (Beijing Time)
Abstract
Van der Waals (vdW) semiconducting materials, especially monolayered transition metal dichalcogenides (TMDCs, e.g. MoS2, WS2, etc.), have garnered intense interests due to their 2D structure that enables super flexibility, optical transparency, and facile integration with disparate materials through vdW forces. Furthermore, they show excellent electrical and photo‐electrical properties even when they are thinned down to a monolayer, which lead to enormous possibilities in the creation of a wide range of ultrathin, flexible, and transparent optoelectronic devices with new and unique functionalities. In this presentation, I will introduce some of advances made towards engineering these 2D vdW materials including a facile synthetic protocol designed for the production of large area TMDC monolayers and heterostructures, strain engineering in 2D materials, finding new copper sulfide electrode materials for various electronic and optoelectronic applications, hydrogen evolution reaction based on 2D TMDC monolayers. These findings and understandings present a significant step toward the development of various 2D materials with interesting properties.
Biography
Sangyeon Pak is an assistant Professor in the School of Electronic and Electrical Engineering at Hongik University, Korea. Prior to joining Hongik University, he was a postdoctoral researcher (2019-2022) in the department of physics at Sungkyunkwan University. He received his Ph.D. in Engineering Science from University of Oxford and B.S. in Electrical Engineering from University of Wisconsin-Madison. His research involves the growth of 2D materials, exploration of fundamental physical properties and new functions, and the design and development of novel nanoscale devices for next generation electronics and optoelectronics devices.