A5084261489- 2D Materials and Applications
- Graphene research and applications
- MXene and MAX Phase Materials
- Magnetic Properties of Alloys
- Diamond and Carbon-based Materials Research
- Hydrogen Storage and Materials
- Digital Media and Visual Art
- Rare-earth and actinide compounds
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Historical Geography and Cartography
- Supercapacitor Materials and Fabrication
- Multidisciplinary Warburg-centric Studies
- Electronic and Structural Properties of Oxides
- Superconducting Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
Seoul National University
2021-2022
Yonsei University
2019-2021
Pukyong National University
1998
Two-dimensional (2D) semiconductors hold promises for electronic and optoelectronic applications due to their outstanding electrical optical properties. Despite a short research history, wide range of 'proof-of-concept' devices based on 2D materials have been demonstrated, highlighting impact in advanced technology. Here we review the unique properties semiconducting terms devices. We summarize all engineering issues devices, including material quality, dielectric, contacts. also discuss...
Monolayer transition metal dichalcogenides (TMDs) are promising for optoelectronics because of their high optical quantum yield and strong light-matter interaction. In particular, the van der Waals (vdW) heterostructures consisting monolayer TMDs sandwiched by large gap hexagonal boron nitride have shown great potential novel optoelectronic devices. However, a complicated stacking process limits scalability practical applications. Furthermore, even though lots efforts, such as fabrication...
Carbon configuration is a critical factor in determining the electrical, tribological, and mechanical properties of carbon films. In this work, we synthesized films on silicate glass by sputtering graphite target an Ar atmosphere while varying DC power. Using Raman spectroscopy photoemission analysis, found that produced at low power consisted mainly sp3 bonds, sp2 ordering became dominant as increased. The sp2/sp3 ratio film controlled associated with two competing deposition mechanisms:...
Quantum wells (QWs), enabling effective exciton confinement and strong light-matter interaction, form an essential building block for quantum optoelectronics. For two-dimensional (2D) semiconductors, however, constructing the QWs is still challenging because suitable materials fabrication techniques are lacking bandgap engineering indirect transitions occur at multilayer. Here, we demonstrate unexplored approach to fabricate atomic-layer-confined multiple (MQWs) via monolithic of transition...
Defects in hexagonal boron nitride (hBN) have attracted much attention since they are effectively used for nanoelectronics, such as single-photon emitters or memristors. The method generating and controlling hBN defects is important because the critical factors determining optical electrical properties of hBN. Here, we demonstrate modulation by generated via mild oxygen plasma treatment. photoluminescence peaks related to were observed at a broad range (∼3.8 eV), current plasma-treated flow...
The large-scale synthesis of two-dimensional transition metal dichalcogenides has been actively investigated in recent years. Here, we introduce a nonconventional process 2-in.-scale monolayer MoS2 with fairly good uniform coverage, which is based on unique reaction mechanism due to the self-limiting precursor source proximity environment distance only ∼0.5 mm from zone. film was successfully synthesized using an atmospheric pressure chemical vapor deposition Mo flowing H2S gas through...
The hydrogenation, disproportionation, desorption, recombination (HDDR) is known as a unique process through which noncoercive cast Nd–Fe–B-type material can be easily converted into coercive one. Although the conventional HDDR generally leads to powderlike material, solid-HDDR realized if properly modified (solid-HDDR). In present study, change of mechanical strength (compressive strength) during has been investigated using sintered magnet with composition Nd13.8Dy0.7Fe78.25Si0.15Mn0.6B6.5....