A5086224005- Silicone and Siloxane Chemistry
- Thin-Film Transistor Technologies
- Advanced Sensor and Energy Harvesting Materials
- Photonic and Optical Devices
- Synthesis and properties of polymers
- Organic Light-Emitting Diodes Research
- ZnO doping and properties
- Advanced Fiber Optic Sensors
- Optical Coatings and Gratings
- Photopolymerization techniques and applications
- Semiconductor Lasers and Optical Devices
- Luminescence Properties of Advanced Materials
- Photonic Crystals and Applications
- Nanomaterials and Printing Technologies
- Aerogels and thermal insulation
- Glass properties and applications
- Mesoporous Materials and Catalysis
- Quantum Dots Synthesis And Properties
- Nanofabrication and Lithography Techniques
- Transition Metal Oxide Nanomaterials
- Luminescence and Fluorescent Materials
- Silicon Nanostructures and Photoluminescence
- Nanowire Synthesis and Applications
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
Korea Advanced Institute of Science and Technology
2016-2025
Korea Institute of Science and Technology
2005-2025
Seoul National University
1995-2025
Korean Association Of Science and Technology Studies
2025
Korea Institute of Machinery and Materials
2005-2024
Daejeon University
2015-2019
Government of the Republic of Korea
2016
Hoseo University
2012
Korea Research Institute of Bioscience and Biotechnology
2007
Yonsei University
2005
A transparent paper made of chitin nanofibers (ChNF) is introduced and its utilization as a substrate for flexible organic light-emitting diodes demonstrated. Given promising macroscopic properties, biofriendly characteristics, availability the raw material, ChNF structural platform green electronics envisaged. As service to our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized online delivery, but not...
Metal-oxide semiconductors have attracted considerable attention as next-generation circuitry for displays and energy devices because of their unique transparency high performance. We propose a simple, novel inexpensive ‘aqueous route’ the fabrication oxide thin-film transistors (TFTs) at low annealing temperatures (that is, <200 °C). These results provide substantial progress toward solution-processed metal-oxide TFTs through naturally formed, indium complex post annealing. The fabricated...
Thin film transistors (TFTs) with amorphous zinc tin oxide (ZTO) channel layer were fabricated by a simple and low-cost solution process. The ZTO thin films are highly transparent (>90% transmittance) in the visible region. TFTs at 400 500 °C operated enhancement mode. TFT annealed shows mobility of 14.11 cm2 V−1 s−1, threshold voltage 1.71 V, subthreshold slope 0.4 V dec−1 an on–off current ratio greater than 108. In addition, we investigated gate bias stability TFT. Positive results...
Nonhydrolytic sol−gel condensation for the synthesis of nanosized inorganic−organic hybrid resin and hydrosilylation reaction under a Pt catalyst fabrication oligosiloxane-based material (phenyl hybrimer) were used in this research. This combination two chemical reactions results with useful properties light emitting diode (LED) encapsulation. Until now, no polymers phenyl polysiloxane materials have been reported high refractive index (over 1.52) transparency accompanied by resistance to...
Transparent electrodes that can maintain their electrical and optical properties stably against large mechanical deformations are essential in numerous applications of flexible wearable electronics. In this paper, we report a comprehensive analysis the electrical, optical, hybrid nanostructures based on graphene metal nanotrough networks as stretchable transparent electrodes. Compared to single material or nanotrough, formation improve uniformity sheet resistance significantly, is, very low...
We report a flexible high-performance conducting film using an embedded copper nanowire transparent electrode; this material can be used as electrode platform for typical optoelectronic devices. The monolithic composite structure of our enables simultaneously outstanding oxidation stability the network (14 d at 80 °C), exceptionally smooth surface topography (Rrms < 2 nm), and excellent opto-electrical performances (Rsh = 25 Ω sq–1 T 82%). A organic light emitting diode device is fabricated...
Transparent thin-film transistors (TTFTs) with an indium-zinc oxide (IZO) active layer by the solution-processed deposition method were fabricated and their TFT characterization was examined. Solution-processed IZO thin films amorphous highly transparent transmittance in visible region optical bandgap of . Spin-coated TTFTs operated depletion mode showed a field-effect mobility as high , threshold voltage on/off current ratio greater than subthreshold slope
Transparent flexible fluorine-doped indium zinc oxide (IZO:F) thin-film transistors (TFTs) were demonstrated using the spin-coating method of metal fluoride precursor aqueous solution with annealing at 200°C for 2 hrs on polyethylene naphthalate films. The proposed thermal evolution mechanism examined by thermogravimetric analysis and Raman spectroscopy can easily explain formation. chemical composition analysed XPS confirms that fluorine was doped in thin films annealed below 250°C. In...
A flexible hard coating for foldable displays is realized by the highly cross-linked siloxane hybrid using structure-property relationships in organic-inorganic hybridization. Glass-like wear resistance, plastic-like flexibility, and elastic resilience are demonstrated together with outstanding optical transparency. It provides a framework application of hybrids protective coatings high scratch resistance flexibility displays.
Wirelessly rechargeable solid-state supercapacitors are studied for soft, smart contact lenses with continuous operations.
As demands for high pixel densities and wearable forms of displays increase, high-resolution printing technologies to achieve performance transistors beyond current amorphous silicon levels allow low-temperature solution processability plastic substrates have been explored as key processes in emerging flexible electronics. This study describes electrohydrodynamic inkjet (e-jet) technology direct oxide semiconductor thin film (TFTs) with resolution (minimum line width: 2 μm) superb...
We report on the performance of an all-in-one flexible hybrid conducting film employing a monolithically embedded AgNW transparent electrode and high-performance glass-fabric reinforced composite substrate (AgNW-GFRHybrimer film). Specifically, we perform in-depth investigations stability AgNW-GFRHybrimer against heat, thermal oxidation, wet chemicals to demonstrate potential as robust platform for thin-film optoelectronic devices. With ease large-area processability, smooth surface...
Abstract The cuticles of insects and marine crustaceans are fascinating models for man‐made advanced functional composites. excellent mechanical properties these biological structures rest on the exquisite self‐assembly natural ingredients, such as biominerals, polysaccharides, proteins. Among them, two commonly found building blocks in model biocomposites chitin nanofibers silk‐like proteins with β‐sheet structure. Despite being wholly organic, chitinous protein complex plays a key role by...
Here, we propose crystalline indium tin oxide/metal nanowire composite electrode (c-ITO/metal NW-GFRHybrimer) films as a robust platform for flexible optoelectronic devices. A very thin c-ITO overcoating layer was introduced to the surface-embedded metal (NW) network. The c-ITO/metal NW-GFRHybrimer exhibited outstanding mechanical flexibility, excellent optoelectrical properties and thermal/chemical robustness. Highly efficient halide perovskite solar cells were fabricated on films. devices...
Abstract Organic–inorganic hybrid perovskite nanoparticles (NPs) are a very strong candidate emitter that can meet the high luminescence efficiency and color standard of Rec.2020. However, instability NPs is most critical unsolved problem limits their practical application. Here, an extremely stable crosslinked NP (CPN) reported maintains photoluminescence quantum yield for 1.5 years (>600 d) in air harsher liquid environments (e.g., water, acid, or base solutions, various polar...
A conformable microneedle biochemical detection platform that can diagnose metabolic disease has been developed.
Abstract Conventional elastomeric polymers used as substrates for wearable platforms have large positive Poisson's ratios (≈0.5) that cause a deformation mismatch with human skin is multidirectionally elongated under bending of joints. This causes practical problems in elastomer‐based devices, such delamination and detachment, leading to poorly reliable functionality. To overcome this issue, auxetic‐structured mechanical reinforcement glass fibers applied the film, resulting negative ratio...
Auxetic metamaterials are a unique class of materials or structures with negative Poisson's ratio and wide array functionalities. However, their inherent porosity presents challenges in practical applications. Filling the perforations while preserving auxeticity is difficult because it demands seamless integration components that have highly distinct mechanical characteristics. Here we introduce auxetic substrate film capable achieving -1, theoretical limit isotropic materials. This...
A novel high-performance transparent glass-fabric reinforced composite film that can be used as a substrate for flexible devices is introduced (see Figure). The exhibited low CTE (13 ppm K−1), high optical transparency (89%), thermal stability (378 °C) and excellent flexibility (rollable). performance of the was successfully tested by fabrication IGZO TFT amorphous Si-based solar cells
We report a novel flexible hybrid plastic film that can be used as robust electrode platform for typical thin-film optoelectronic devices. Silver nanowires (AgNWs) were embedded on the surface of glass-fabric reinforced transparent composite (GFRHybrimer) to form conducting substrate with excellent opto-electrical properties, superior thermal stability, and impressive mechanical flexibility. A highly efficient inverted organic solar cell power conversion efficiency (PCE) 5.9% under 100 mW...