A5010959273- 2D Materials and Applications
- MXene and MAX Phase Materials
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Diatoms and Algae Research
- Biocrusts and Microbial Ecology
- Graphene research and applications
- Advanced battery technologies research
- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- Algal biology and biofuel production
- Diamond and Carbon-based Materials Research
- Radiation Shielding Materials Analysis
- Catalysis and Hydrodesulfurization Studies
- Ammonia Synthesis and Nitrogen Reduction
- Luminescence Properties of Advanced Materials
- Gas Sensing Nanomaterials and Sensors
- Advanced materials and composites
- Radiation Therapy and Dosimetry
- Chalcogenide Semiconductor Thin Films
- Advanced biosensing and bioanalysis techniques
- High-Temperature Coating Behaviors
- Molecular Junctions and Nanostructures
Sungkyunkwan University
2018-2024
The metallic 1T phase of WS2 (1T-WS2 ), which boosts the charge transfer between electron source and active edge sites, can be used as an efficient electrocatalyst for hydrogen evolution reaction (HER). As semiconductor 2H (2H-WS2 ) is inherently stable, methods synthesizing 1T-WS2 are limited complicated. Herein, a uniform wafer-scale film prepared using plasma-enhanced chemical vapor deposition (PE-CVD) system. growth temperature maintained at 150 °C enabling direct synthesis films on both...
Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted considerable attention owing to their synergetic effects with other 2D materials, such as graphene and hexagonal boron nitride, in TMD-based heterostructures. Therefore, it is important understand the physical properties of TMD–TMD vertical heterostructures for applications next-generation electronic devices. However, conventional synthesis process has some critical limitations, nonreproducibility low yield. In this...
The conventional synthesis of two-dimensional (2D) transition metal dichalcogenide (TMDC) heterostructures is low yielding and lack the heterojunction interface quality. chemical vapor deposition (CVD) techniques have achieved high-quality heterostructure interfaces but require a high temperature (>600 °C) yield heterostructures. Therefore, large scale quality TMDC heterojunctions using low-temperature methods are in demand. Here, high-quality, wafer-scale MoS2 WS2 with 2D were prepared by...
Flexibile biosensors have a lot of applications in measuring the concentration target bioanalytes. In combination with its flexibility, electrochemical sensors containing 2D materials particular advantages such as enlarged area compatibility, transparency, and high scalability. A flexible biosensor was fabricated by direct synthesis molybdenum disulfide (MoS2) on polyimide (PI) substrate, which can be used working electrode electrochemistry platforms. The formation 2D-MoS2 PI achieved using...
Abstract Herein, a layer of molybdenum oxide (MoO x ), transition metal (TMO), which has outstanding catalytic properties in combination with carbon‐based thin film, is modified to improve the hydrogen production performance and protect MoO acidic media. A film graphene transferred onto layer, after structure doped N S atoms at room temperature using plasma doping method modify electronic intrinsic material. The oxygen functional groups increase interfacial interactions electrical contacts...
Abstract Transition metal dichalcogenides (TMDs) have received considerable attention as promising electrocatalysts for the hydrogen evolution reaction (HER), yet their potential is often constrained by inertness of basal planes arising from poor adsorption ability. Here, relationship between electronic structure WS 2 plane and HER activity systemically analyzed to establish a clear insight. The valance state sulfur atoms on has been tuned enhance through sequential engineering processes,...
In article number 1905000, Jae-Hyun Lee, Taesung Kim, and co-workers demonstrate a uniform stable 1T phase of WS2 (1T-WS2) film on 4-inch wafer using plasma-enhanced chemical vapor deposition system. The nanocrystalline 1T-WS2, containing high density grain boundary, is utilized as an electrocatalyst for the hydrogen evolution reaction exhibits efficient catalytic activity durability.
A change in the stacking sequence of vacancy-rich 2H and 1T phase greatly influences photoperformance. The efficient charge transfer mechanism revealed highest 1T/2H-MoS 2 heterostructure photocurrent.
DNA extracted from salmon has recently attracted the attention of researchers, resulting in applications photonic and electronic devices. Porphyra-334, a type mycosporine-like amino acids (MAAs), also plays an important role photoprotection for variety marine organisms including bacteria algae. Although MAA molecules have been intensively studied, fabrication methodology applicability MAA-embedded complexes physical seldom discussed due to incompatibility between biological samples platform....
Hydrogen holds tremendous promise as one of many alternatives for clean energy generation with high density and zeroes environmental impact. can be easily produced by using Platinum-based catalyst to efficiently lowers the large potential electrolysis, but confined due scarce expensiveness. Transition metal dichalcogenides (TMDCs) such MX 2 (M stands Mo or W, Nb, Ta etc. X= S, Se etc.) is essential materials which show promising catalytic activity. The bond between chalcogen a covalent bond,...
The layered transition metal dichalcogenide molybdenum disulphide (MoS 2 ) is an excellent electrode material due to the presence of pseudocapacitance and electric double layer capacitance. However, low rate performance capacity fading restrict its application in supercapacitor field. doping composite formation can tackle these problems easily. nitrogen increase electrical conductivity MoS , which eventually enhances while oxide sulphide nanocomposite may materials. Thus, here we report...