A5034904293- Conducting polymers and applications
- Polymer Nanocomposites and Properties
- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Organic Electronics and Photovoltaics
- Advanced Sensor and Energy Harvesting Materials
- Quantum Dots Synthesis And Properties
- Supercapacitor Materials and Fabrication
- Nanofabrication and Lithography Techniques
- Photonic Crystals and Applications
- Organic Light-Emitting Diodes Research
- Advancements in Battery Materials
- Thin-Film Transistor Technologies
- Graphene research and applications
- Nanomaterials and Printing Technologies
- Advanced battery technologies research
- Advanced Battery Materials and Technologies
- Rheology and Fluid Dynamics Studies
- Polymer Foaming and Composites
- Innovative Microfluidic and Catalytic Techniques Innovation
- Synthesis and properties of polymers
- Pickering emulsions and particle stabilization
- Carbon Nanotubes in Composites
- Electrocatalysts for Energy Conversion
- Polymer Nanocomposite Synthesis and Irradiation
University of Seoul
2023-2024
Korea Advanced Institute of Science and Technology
2011-2020
Government of the Republic of Korea
2014-2018
Daejeon University
2014-2018
Yuhan University
2015-2017
Kootenay Association for Science & Technology
2014-2016
Daegu Gyeongbuk Institute of Science and Technology
2011-2014
Ulsan National Institute of Science and Technology
2013
Dankook University
2013
Korea Research Institute of Chemical Technology
2011-2012
The use of size-controlled Ag nanoparticles (NPs) synthesized by a polyol process in the BHJ shows improved values Jsc, FF, and EQE. These results are due to an enhanced light absorption caused plasmonic field effect cluster from NPs charge transport active layer. clusters reduce series resistance induce efficient system
Graphene electronic circuits are prepared on paper substrates by using graphene nanoplates and applied to foldable paper-based electronics. The show a small change in conductance under various folding angles maintain an path after repetition of unfolding. Foldable applications with exhibit excellent stability.
Graphene-based carbon nanostructures with nanometer dimensions have been of great interest due to the existence a bandgap. So far, well-ordered edge structure and uniformly synthesized graphene quantum dots (GQDs) hexagonal single-crystalline not directly observed owing limited precision current synthesis approaches. Herein, we report on novel approach just for size-controlled GQDs shape but also new discovery constructing 2D 3D single crystal structures from d-glucose via catalytic solution...
Abstract This study describes the microstructure and thermal mechanical properties of poly(hydroxybutyrate‐co‐hydroxyvalerate) (PHB/HV)–organoclay nanocomposites prepared by melt intercalation using Cloisite 30B, a monotallow bis‐hydroxyethyl ammonium‐modified montmorillonite clay. X‐ray diffractometry transmission electron microscopy analyses clearly confirm that an intercalated is formed finely distributed in PHB/HV copolymer matrix because has strong hydrogen bond interaction with...
The photocatalytic splitting of water into hydrogen and oxygen using solar light is a potentially clean renewable source for fuel. Titanium oxide nanotubes coated with tungsten were prepared to harvest more the first time characterized their efficiency. trioxide coatings significantly enhanced visible spectrum absorption titanium dioxide nanotube array, as well solar-spectrum induced photocurrents. For sample, upon white illumination at 150mW∕cm2, gas generated overall conversion efficiency 0.87%.
A semitransparent flexible metal halide perovskite (MHP) solar cells were demonstrated by reproducible dry stamping transfer of a poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS, PH1000) transparent top electrode onto poly(ethylene terephthalate) (PET)/indium tin oxide (ITO)/PEDOT:PSS (AI4083)/MHP/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM). The the PEDOT:PSS was enabled modification with imine) (PEI)/2-methoxyethanol (2-MEA) solution. In addition, PEI/2-MEA to...
When a glass substrate is dipped into colloidal suspension, the contact line shape changed with angle of tilt. These variations in indicate possibility for thickness control crystals. Thus, we have investigated how crystals specific tilted angles (−10°, 0°, 10°, 20°, and 30°, respectively). As more (from −10° to 30°), smoother thicker formed are obtained. In addition, it possible explain why multiple patterns on substrate. It was found that fabricate three-dimensional an even surface,...
Abstract The development of strain‐insensitive stretchable transparent conductors (TCs) is essential for manufacturing electronics. Despite recent progress, achieving a high optoelectronic performance under applied strain 50% continues to present significant challenge in this research field. Herein, an ultratall and ultrathin aspect ratio serpentine metal structure described that exhibits remarkable stretching ability (the resistance remains constant 100%) simultaneously provides excellent...
Abstract Hexagonally arrayed structures of colloidal crystals with uniform surface are a good candidate for master molds to be used in soft lithography. Here, the fabrication periodically nanostructures using poly(dimethylsiloxane) (PDMS) based on three‐dimensionally (3D) ordered is reported. A robust, high‐quality 3D colloidal‐crystal prepared suspension containing water‐soluble polymer. The patterns can then transferred onto polymer film via lithography, by means replication pattern PDMS....
Chestnut-bur-like palladium nanostructures were synthesized through the particle attachment growth mechanism by using CPC as a surfactant and they exhibited greater electrocatalytic activity toward ethanol oxidation reaction.
Abstract Capacity decay in vanadium redox flow batteries during charge–discharge cycling has become an important issue because it lowers the practical energy density of battery. The battery capacity tends to drop rapidly within first tens cycles and then drops more gradually over subsequent long‐term operation. This paper analyzes discusses reasons for this early decay. imbalanced crossover rate species was found remain high until total difference concentration between positive negative...
Zigzag-shaped Ag nanoplates display unique anisotropic planar structures with unusual jagged edges and relatively large lateral dimensions. These characteristics make such promising candidates for metal inks in printed electronics, which can be used realizing stretchable electrodes. In the current work, we a one-pot coordination-based synthetic strategy to synthesize zigzag-shaped nanoplates. procedure, cyanuric acid was both as ligand of Ag+ ion, hence producing complex controlling kinetics...
We report a facile method for the synthesis of Au@Pd nanostructures with controlled sizes and morphologies from flower-like to cuboctahedral shape by seed-mediated growth using Au nanospheres as seeds cetylpyridinium chloride (CPC) surfactant. The use CPC surfactant its molar ratio respect Na2PdCl4 were critical factors generate morphology. In addition, morphology could be easily changing concentration in reaction solution, where reduction kinetics according brought variety Pd shell...
A highly flexible graphene paper assembled from nanoplatelets and oxides is fabricated shows high electrochemical performance as a Li-ion battery anode.