A5100322021- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Thin-Film Transistor Technologies
- Transition Metal Oxide Nanomaterials
- Solar and Space Plasma Dynamics
- Organic Light-Emitting Diodes Research
- Advanced Battery Technologies Research
- Organic Electronics and Photovoltaics
- Semiconductor Lasers and Optical Devices
- Advanced Memory and Neural Computing
- Structural Load-Bearing Analysis
- Semiconductor materials and devices
- Aerogels and thermal insulation
- IPv6, Mobility, Handover, Networks, Security
- Calibration and Measurement Techniques
- Photonic and Optical Devices
- Neuroscience and Neural Engineering
- Chalcogenide Semiconductor Thin Films
- Astro and Planetary Science
- Advanced battery technologies research
- GaN-based semiconductor devices and materials
- High Temperature Alloys and Creep
- Fatigue and fracture mechanics
- Geomagnetism and Paleomagnetism Studies
Yonsei University
2024
Korea Institute of Science and Technology
2021-2023
Korea Automotive Technology Institute
2023
Daegu Gyeongbuk Institute of Science and Technology
2023
Inha University
2020-2022
eBay (Ireland)
2022
Samsung (South Korea)
1999-2021
Jeonbuk National University
2021
Korea Atomic Energy Research Institute
2018-2021
Hankuk University of Foreign Studies
2021
Lithium dendrite growth in solid electrolytes is one of the major obstacles to commercialization solid-state batteries based on garnet-type electrolytes. Herein, we propose a strategy that can simultaneously resolve both interface and electronic conductivity issues via simple one-step procedure provides multilayer protection at low temperature. We take advantage facile chemical conversion reaction, showing wet-coated SnF2 particles electrolyte effectively produces multifunctional composed...
Compared with solid scintillators, liquid scintillators have limited capability in dosimetry and radiography due to their relatively low light yields. Here, we report a new generation of highly efficient low-cost constructed by surface hybridisation colloidal metal halide perovskite CsPbA3 (A: Cl, Br, I) nanocrystals (NCs) organic molecules (2,5-diphenyloxazole). The hybrid compared state-of-the-art CsI Gd2O2S, demonstrate markedly competitive radioluminescence quantum yields under X-ray...
This paper proposes the novel concept of an optically invisible antenna built using photolithography that can be integrated in active display panels such as organic light emitting diodes and liquid crystal displays. Represented antenna-on-display (AoD), this proposed approach is exemplified for future millimeter-wave (mmWave) 5G cellular devices. Empirical examinations confirm devised diamond-grid-shaped 2000 Å-thick Ag-alloy electrodes on a glass substrate feature electrical loss...
There is an urgent need to develop improved anode materials for lithium-ion batteries (LIBs). Herein, we report the synthesis of a graphene quantum dots (GQDs)-coated hierarchical nanoflake-based CuO microspheres (H–CuO) composite on Cu foam via one-pot hydrothermal technique use as binder-free LIBs. The carboxyl-functionalized GQD coating H–CuO not only results in lower charge-transfer resistance and enhanced electrical conductivity but also prevents dissolution agglomeration electrode....
We demonstrate the impressive performance of sparsely studied nickel titanate anode materials for Li-ion batteries (LIBs).
Development of a coated conductor tape joint with good quality and low resistivity, Rsj, in terms transport mechanical properties, was attempted by direct bonding at the interface Cu–Cu stabilizers overlapped GdBCO CC tapes. In this study, we to achieve Rsj introducing hybrid joining, soldering ultrasonic welding (UW), its mechanism analyzed theoretically. Coated tapes were experimentally joined using various methods soldering, UW, combinations two. As result, much lower about 57 nΩ · cm2...
Herein, the successful fabrication of a high-performance Si-based composite Li-ion battery (LIB) anode, comprising dual-carbon framework graphene oxide (GO) and oxidized single-walled carbon nanohorns (o-NHs), was demonstrated using simple scalable spray-drying process followed by heat treatment (h-s-GO/Si/NH). The GO nanosheets in h-s-GO/Si/NH anode acted as robust spherical that facilitated mechanical electrical connection between carbon-coated Si (c-Si) nanoparticles, homogeneous...
Abstract We successfully fabricated GIZO (Ga 2 O 3 ‐In ‐ZnO) TFTs with high mobility of 2.6 cm /Vs and threshold voltage standard deviation 0.7V which is comparable to that a‐Si TFTs. Because conventional 5 mask process bottom gate TFT structure back channel etch type length μm used, it expected be transferred mass production line in near future. Also we report the dependency on post after surface exposed suggest effective method for controlling amorphous Finally demonstrate 4 inch QVGA...
Abstract Fourier ptychographic microscopy (FPM) is a computational platform capable of large‐area, high‐resolution imaging thin specimens. FPM enhances the spatial resolution beyond diffraction limit objective by synthesizing frequency information from multiple images captured at various illumination angles. However, this enhancement comes cost temporal resolution, making conventional FPMs unsuitable for dynamic samples. The low mainly attributed to two factors: large number measurements...
Abstract One‐, two‐, and three‐dimensional microstructures with dispersed silver nanoparticles are fabricated by a combination of photopatterning thermal treatment from salt containing photosensitive epoxy resin. Ultraviolet photo‐irradiation subsequent combined to control the rate reduction, size arrangement nanoparticles, as well reticulation This approach allows creation high resolution 1‐, 2‐, 3D patterns homogeneous distribution regardless irradiated area.
This work reports on a mechanism for irreversible resistive switching (RS) transformation from bipolar to unipolar RS behavior in SrRuO3 (SRO)/Cr-doped SrZrO3 (SZO:Cr)/Pt capacitor structures prepared Ti/SiO2/Si substrate. Counter-clockwise memory current-voltage (I–V) characteristics are observed within the voltage window of −2.5 +1.9 V, with good endurance and retention properties. As bias increases further beyond 4 V under forward bias, forming process occurs resulting mode mode. is...
Non-orthogonal multiple access (NOMA) is an effective technique to improve spectral efficiency and connectivity level of multi-user systems by means successive interference cancellation (SIC) decoding. However, the optimization NOMA scheme for uplink has not been well addressed in literature. This work tackles joint design users' transmit power levels SIC decoding order at BS a system. Since it difficult find optimal solution, iterative algorithm proposed that alternately optimizes powers...
A new fabrication process of vertically driven electrostatic scanner for laser display is presented. This composed two structures having vertical combs. The combs are etched by ICP RIE and assembled eutectic bonding aligner.
Abstract Rechargeable, cost‐efficient aqueous aluminium‐ion batteries (AAIBs) possess abundant trivalent charge carriers with high volumetric energy densities. However, the rapid and irreversible formation of Al 2 O 3 passivation films on (AI) anodes while using electrolytes limits their development. Herein, Zn metal was used as anode, 3+ locally deposited anode during charging. V 6 13 a mixed vanadium state 4+ /V 5+ chosen cathode because its efficient ion diffusion (solid state) electron...