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2D materials: From Development of Novel Growth methods Toward Its Multifunctional Applications
时间:2018-06-15 17:03    点击:   所属单位:先进材料与纳米科技学院
讲座名称 2D materials: From Development of Novel Growth methods Toward Its Multifunctional Applications
讲座时间 2018-06-17 15:00:00
讲座地点 南校区G楼118报告厅
讲座人 阙郁伦
讲座人介绍

Yu-Lun Chueh received his Ph.D degree from department of materials science and engineering, National Tsing Hua University, Taiwan in 2006 and worked as postdoctor in electrical engineering and computer science, UC Berkeley from 2007-2009. He joined department of materials science and engineering, National Tsing Hua university in 2009. Currently, He is a professor in department of materials science and engineering, National Tsing Hua University, Taiwan. He has published 230 peer-reviewed papers and 24 patents with total citations >9500 and h-index of 45. The research activities of his lab are highly interdisciplinary and are committed to exploring new unpredicted levels of functional materials to enable new schemes on manipulating and processing of engineering nanomaterials in nanoelectronics and energy harvesting applications. He is committed to currently realize intellectual visions through studies on four major areas toward New Material Technologies: (1) Development of Cu(In, Ga)Se2 solar cell and its investigation on light harvesting behaviors, (2) Development of various method to synthesize different Graphene/two dimensional materials, (3) Low power resistive random access memory and (4) Growth of low dimensional materials and its possible functional application

讲座内容

Novel condensed matter systems can be understood as new compositions of elements or old materials in new forms. According to the definition, various new condensed matter systems have been developed or are under development in the recent years. 2D layered materials, including graphene, transition metal dichalcogenides (TMDs) allow the scaling down to atomically thin thicknesses and possess unique physical properties under dimensionality confinement. Chemical vapor deposition (CVD) process is the most popular approach for all kind of 2D materials due to its high yield and quality. Nevertheless, the need for high temperature and the relatively long process time within each cycle hinders for commercial development in terms of production cost. However, the transfer procedure has become one of the major limitations of the overall performance.

In the first part of my talk, I will present several approaches, including laser irradiation assisted-selenization (LIAS) process, fast microwave annealing and plasms enhance selenization processes to grow different two-dimensional transition metal dichalcogenides materials on arbitrary substrate in my lab. The detailed formation mechanisms, microstructures and physical performances as well as its applications in gas sensors, photodetector and water splitting behaviors based on these two 2D materials were reported and investigated.

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