Phase/Structure-Engineered Two-Dimensional Layered Materials for Innovative Nanoelectronics

3:00pm - 4:30pm
LT-A Lecture Theater

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 recent years. 2D layered materials, including graphene and transition metal dichalcogenides (TMDs) allow the scaling down to atomically thin thicknesses and possess unique physical properties under dimensionality confinement. The chemical vapor deposition (CVD) process is the most popular approach for all kinds 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 commercial development in terms of production cost. However, the transfer procedure has become one of the major limitations of the overall performance. In my talk, an inductively coupled plasma (ICP) was used to synthesize Transition Metal Dichalcogenides (TMDs) through a plasma-assisted selenization process of metal oxide (MOx) at a low temperature. Compared to other CVD processes, ICP facilitates the decomposition of the precursors at lower temperatures. We create the phase/structure-engineered-1T/2H 3D-hierarchical 2D materials derived from the MOx 3D-hierarchical nanostructures through a low-temperature plasma-assisted selenization process with controlled shapes grown by a glancing angle deposition system (GLAD). The applications, including (1) water splitting, (2) gas sensors, (3) batteries, and (4) resistive change memory, will be reported.

讲者/ 表演者:
Yu-Lun Chueh (闕郁倫)
Department of Materials Science and Engineering, National Tsing-Hua University, Taiwan

Name: Yu-Lun Chueh

Position: Distinguished Professor

Fellow of the Optical Society (OSA)

Fellow of the Royal Society of Chemistry (RSC)

Fellow of the Institute of Physics (IOP)

Fellow of the Institute of Materials, Minerals and Mining (IOM3)

Associate Academician, Asia Pacific Academy of Materials

IEEE Senior Member

Editor-in-Chief of Nanoscale Research Letters

Department: Department of Materials Science and Engineering

Education: PhD, Department of Materials Science and Engineering National Tsing-Hua University


Phone number: +886-3-5715131#33965


Research areas:

Nanomterials, Battery, ReRAM, 2D materials, CISG Solar Cell


Brief description of Yu-Lun Chueh’s lab:

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.