A5055484183- Graphene research and applications
- ZnO doping and properties
- Diamond and Carbon-based Materials Research
- Semiconductor materials and devices
- Graphene and Nanomaterials Applications
- Advanced Memory and Neural Computing
- Boron and Carbon Nanomaterials Research
- MXene and MAX Phase Materials
- Nanocluster Synthesis and Applications
- Random lasers and scattering media
- Microstructure and Mechanical Properties of Steels
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Chalcogenide Semiconductor Thin Films
- Electrocatalysts for Energy Conversion
- Ga2O3 and related materials
- 2D Materials and Applications
- Radiation Effects in Electronics
- Luminescence and Fluorescent Materials
- Welding Techniques and Residual Stresses
- Advanced Thermoelectric Materials and Devices
- Metal Alloys Wear and Properties
- Luminescence Properties of Advanced Materials
Ulsan National Institute of Science and Technology
2015-2020
Institute for Basic Science
2020
Doping semiconductor nanocrystals with magnetic transition-metal ions has attracted fundamental interest to obtain a nanoscale dilute semiconductor, which unique spin exchange interaction between and exciton. So far, the study on doped NCs usually been conducted larger than 2 nm because of synthetic challenges. Herein, we report synthesis characterization Mn(2+)-doped (CdSe)13 clusters, smallest semiconductors. In this study, single-sized clusters are produced in large scale. Despite their...
Abstract Laser diodes are efficient light sources. However, state-of-the-art laser diode-based lighting systems rely on light-converting inorganic phosphor materials, which strongly limit the efficiency and lifetime, as well achievable output due to energy losses, saturation, thermal degradation, low irradiance levels. Here, we demonstrate a macroscopically expanded, three-dimensional diffuser composed of interconnected hollow hexagonal boron nitride microtubes with nanoscopic...
There is an urgent need to develop metal-free, low cost, durable, and highly efficient catalysts for industrially important oxygen evolution reactions. Inspired by natural geodes, unique melamine nanogeodes are successfully synthesized using hydrothermal process. Sulfur-modified graphitic carbon nitride (S-modified g-CN x ) electrocatalysts obtained annealing these in situ with sulfur. The sulfur modification the structure leads excellent reaction activity lowering overpotential. Compared...
Graphene-based two-dimensional heterostructures are of substantial interest both for fundamental studies and their various potential applications. Particularly interesting atomically thin semiconducting oxides on graphene, which uniquely combine a wide band gap optical transparency. Here, we report the atomic-scale investigation novel self-formation ZnO monolayer from Zn metal graphene oxide substrate. The spontaneous oxidation ultrathin occurs by reaction with oxygen supplied substrate, is...
Journal Article B22-P-03 Study on microstructure and mechanical properties of boron added carbon steel joint by laser-arc hybrid welding Get access Seungwoo Son, Son School Materials Science Engineering, Ulsan National Institute Technology (UNIST), Ulsan, Republic Korea zhlee@unist.ac.kr Search for other works this author on: Oxford Academic PubMed Google Scholar Kangsik Kim, Kim Hyo-Ki Hong, Hong Zonghoon Lee Microscopy, Volume 64, Issue suppl_1, November 2015, Page i104,...