A5101446992- Semiconductor materials and devices
- Copper Interconnects and Reliability
- Advanced Sensor and Energy Harvesting Materials
- ZnO doping and properties
- Liquid Crystal Research Advancements
- Organic Light-Emitting Diodes Research
- Silicone and Siloxane Chemistry
- Aerospace Engineering and Control Systems
- Polymer Nanocomposite Synthesis and Irradiation
- Fluid Dynamics Simulations and Interactions
- Photonic Crystals and Applications
- Polymer Nanocomposites and Properties
- Optical Coatings and Gratings
- Synthesis and properties of polymers
- Tribology and Wear Analysis
- Thin-Film Transistor Technologies
- Photopolymerization techniques and applications
- Rocket and propulsion systems research
- Analytical Chemistry and Sensors
- Perovskite Materials and Applications
- Polymer Surface Interaction Studies
- Organic Electronics and Photovoltaics
- NMR spectroscopy and applications
- Quantum Dots Synthesis And Properties
- Nanomaterials and Printing Technologies
Kyung Hee University
2011-2024
Korea Advanced Institute of Science and Technology
1992-1995
Korea Research Institute of Chemical Technology
1993
We prepared a hybrid electrode comprosed of silver nanowires/poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (AgNW/PEDOT:PSS) nanocomposite for flexible organic light-emitting diodes (FOLEDs). To increase the conductivity PEDOT:PSS, diethylene glycol (DEG) was introduced into PEDOT:PSS solution. The layer shows higher figure merits (FoM) when with optimum amount 7 vol%-DEG in coating solution, due to three-dimensional conducting network formed electrode. perfluorinated ionomer...
Piezoelectric nanogenerators (NGs) consist of zinc oxide nanorods (ZNRs), and polydimethylsiloxane (PDMS) layers were fabricated on indium tin (ITO)-coated substrate for the energy harvesting system. The formation seed by an optimized aqueous solution method greatly helped growth well-aligned ZNRs NGs. Polyethylenimine (PEI) was added to increase aspect ratio ZNRs, which reached up 24:1, showing best performance PDMS increased work function difference top Ag electrode. thickness as 80 μm,...
Nanoscale grating patterns with indium–zinc-oxide (IZO) layer have been successfully fabricated by ultraviolet (UV) nanoimprinting technique and sputter deposition process. groove prepared here can play important roles as alignment layers well conducting electrodes. Performance for LC was tested evaluating order parameter. A preliminary version of twist nematic (TN) cell the nanopattern coated IZO also evaluated.
Abstract Al 2 O 3 /ZrO nanolaminate was formed on plastic substrates by low frequency plasma‐enhanced atomic layer deposition (PEALD) process for enhancement of barrier properties. A remarkable performance observed in the optimized structure, which attributed to cover drawback each between nanolaminate.
Herein, a novel strategy to fabricate haze films employing liquid crystal (LC) technology for photovoltaic (PV) applications is reported. We fabricated high optical film composed of low-molecular LCs and polymer applied the improve energy conversion efficiency PV module. The technique utilized our based on spontaneous polymerization-induced phase separation between polymers. With optimized fabrication conditions, exhibited an value over 95% at 550 nm. By simply attaching onto front surface...
An intriguing and simple method, a two-step polyimide (PI) curing technique, was proposed for the fabrication of flexible plastic liquid crystal (LC) devices. This technique is based on concept that PI interfaces contacted through columnar spacers act as adhesive secure attachment two substrates via process in poly(amic acid)'s (PAA) conversion to PI. A preliminary version LC display employing this fabricated, confirmed useful such applications. The electro-optical reproducibility device...
We applied 4,6-Bis(3,5-di(pyridin-2-yl)phenyl)-2-methylpyrimidine (B2PyMPM), a material with wide bandgap and excellent electron mobility, as the host for emissive layer in red, green, blue organic phosphorescence-emitting devices. In case of red emission, it exhibited stable outstanding external quantum efficiency (EQE) 10.2% along color coordinates (0.68, 0.31), indicating its potential candidate smartphone displays. For green emissions, relatively low electroluminescence characteristics...
Abstract Several methods to enhance the barrier property of plastic substrate were tested. Inorganic layer SiNxOy was deposited by PECVD, and properties enhanced with increased deposition time. Pre-treatment Ar/O2 plasma modified surface for better improved properties. Organosilane-nanoclay composite formed curing dope solution on through hydrogen bonding formation, it especially oxygen. Multilayer combination inorganic organosilane-nanoclay attained best among several much damaged bending...
A noninvasive, optical plasma monitoring method in plasma-enhanced atomic layer deposition (PEALD) process for nanoscale water vapor barrier film is presented. Any equipment malfunction, as well a deviation the condition of individual components can easily jeopardize result. Al₂O₃ was employed this research test vehicle, and high-speed demonstrated. It shown that useful not only measuring pulses real time, but also detection any variation which enables inferring dynamics advanced control...