A5016363842- 2D Materials and Applications
- Graphene research and applications
- Semiconductor materials and devices
- MXene and MAX Phase Materials
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Advancements in Semiconductor Devices and Circuit Design
- Perovskite Materials and Applications
- Supercapacitor Materials and Fabrication
- Advanced Memory and Neural Computing
- Advancements in Battery Materials
- Thin-Film Transistor Technologies
- Advanced battery technologies research
- TiO2 Photocatalysis and Solar Cells
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Nanowire Synthesis and Applications
- Chalcogenide Semiconductor Thin Films
- Graphene and Nanomaterials Applications
- Conducting polymers and applications
- CCD and CMOS Imaging Sensors
- Ferroelectric and Negative Capacitance Devices
- Integrated Circuits and Semiconductor Failure Analysis
- Diamond and Carbon-based Materials Research
- Transition Metal Oxide Nanomaterials
Sejong University
2015-2024
University of Alberta
2019-2023
Bridge University
2021
Government of the Republic of Korea
2015-2020
Gwangju University
2020
Materials Research Center
2020
University of Seoul
2015-2018
Kookmin University
2015
University of California, Davis
2015
Soonchunhyang University Hospital
2014
Abstract Metal organic frameworks (MOFs), which constitute a new class of porous organic–inorganic hybrid materials, have gained considerable attention in the fields electrochemical energy storage and conversion devices owing to their open topological structures, large surface areas, tunable morphologies, extreme redox activity. A synthesis protocol that comprises coprecipitation followed by controlled calcination processes design battery‐type electrode is used. This consists...
Hierarchical porous nanowire-like MoS2/CoNiO2 nanohybrids were synthesized via the hydrothermal process. CoNiO2 nanowires selected due to edge site, high surface/volume ratio, and superior electrochemical characteristics as backbone for decoration of layered MoS2 nanoflakes construct innovative structure hierarchical three-dimensional (3D) NWs hybrids with excellent charge accumulation efficient ion transport capabilities. Physicochemical analyses conducted on developed hybrid composite,...
We report a simple and mass-scalable approach for thin MoS2 films via RF sputtering combined with the post-deposition annealing process. have prepared as-sputtered film using target in system. The was subjected to improve crystalline quality at 700 °C sulfur argon environment. analysis confirmed growth of continuous bilayer few-layer film. mobility value ~29 cm(2)/Vs current on/off ratio on order ~10(4) were obtained MoS2. increased up ~173-181 cm(2)/Vs, respectively, our FETs is larger than...
This report describes the synthesis of a layered molybdenum disulfide (MoS2)–tungsten (WS2) heterostructure onto fluorine doped tin oxide covered glass substrates using combination chemical bath deposition and RF sputtering techniques. FESEM images revealed that MoS2–WS2 surface consisted cauliflower structured array grains with spherical structures. The vertically aligned atomic layers were explored by transmission electron microscopy for heterostructure. Hydrogen evolution reaction (HER)...
In view of recent environmental concerns, the need for energy security, and ever-increasing demand portable systems, scientific community is strongly motivated to develop sustainable renewable devices. Recently, hydrogen evolution reaction (HER) supercapacitors have become highly feasible technologies supporting global requirements. For this purpose, an efficient interface between carbon nanotubes (CNTs) decorated with metal carbide nanosheets (designated W2C@CNT Mo2C@CNT) developed herein...
Graphene/Si Schottky junction solar cells are widely studied in relation to the harvesting of energy, but high efficiency is limited due surface recombination at interface. Moreover, defects, wrinkles, and impurities may arise during wet transfer process graphene. We propose an easy approach fabricate by using directly grown graphene on a textured substrate with large active area. In our novel technique, we grow few layers top Al2O3/Si plasma enhanced chemical vapor deposition. The high-k...
In recent times, two-dimensional transition-metal dichalcogenides (TMDs) have become extremely attractive and proficient electrodes for dye-sensitized solar cells (DSSCs) water electrolysis hydrogen evolution as alternatives to the scarce metal platinum (Pt). The active TMD molybdenum selenide (MoSe2) tungsten disulfide (WS2) are inspiring systems owing their abundance of sulfur selenium sites, but outputs lacking due inactive basal planes ineffective transport behavior. this work, van der...
Abstract Two-dimensional (2D) heterostructure with atomically sharp interface holds promise for future electronics and optoelectronics because of their multi-functionalities. Here we demonstrate gate-tunable rectifying behavior self-powered photovoltaic characteristics novel p-GeSe/n-MoSe 2 van der waal heterojunction (vdW HJ). A substantial increase in rectification was observed when the devices were subjected to gate bias. The highest ~ 1 × 10 4 obtained at V g = − 40 V. Remarkable p-n...
Developing efficient electrocatalysts for urea oxidation reaction (UOR) can be a promising alternative strategy to substitute the sluggish oxygen evolution (OER), thereby producing hydrogen at lower cell-voltage. Herein, we synthesized binder-free thin film of ultrathin sheets bimetallic Cu-Fe-based metal-organic frameworks (Cu/Fe-MOFs) on nickel foam via drop-casting route. In addition scalable route, drop-casted film-electrode demonstrates UOR potentials 1.59, 1.58, 1.54, 1.51, 1.43 and...
This work elaborates on the decoration of metal oxides (ZnO and Fe 3 O 4 ) between MXene sheets for use as supporting geometry PCBM electron transport layers (ETLs) in perovskite solar cells X-ray detectors.
In this article, we report layer-controlled, continuous and large-area molydenum sulfide (MoS2) growth onto a SiO2/Si substrate by RF sputtering combined with sulfurization. A two-step process was employed to synthesize MoS2 films. the first step, an atomically thin MoO3 film deposited magnetron at 300 °C. Subsequently, as-sputtered further subjected post-annealing sulfurization processes 650 °C for 1 hour. It observed that number of layers can be controlled adjusting time. The fabricated...