A5053490991- Conducting polymers and applications
- Perovskite Materials and Applications
- Advanced Memory and Neural Computing
- Organic Electronics and Photovoltaics
- Advanced Sensor and Energy Harvesting Materials
- ZnO doping and properties
- 2D Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Luminescence and Fluorescent Materials
- Advanced Chemical Sensor Technologies
- Ga2O3 and related materials
- Tactile and Sensory Interactions
- Neuroscience and Neural Engineering
- Supercapacitor Materials and Fabrication
- Olfactory and Sensory Function Studies
- Semiconductor materials and interfaces
- Liquid Crystal Research Advancements
- Transition Metal Oxide Nanomaterials
- Metamaterials and Metasurfaces Applications
- Photochromic and Fluorescence Chemistry
- Plasmonic and Surface Plasmon Research
- Nanowire Synthesis and Applications
Seoul National University
2019-2025
University of Tsukuba
2021
Neuromorphic sensors, designed to emulate natural sensory systems, hold the promise of revolutionizing data extraction by facilitating rapid and energy-efficient analysis extensive datasets. However, a challenge lies in accurately distinguishing specific analytes within mixtures chemically similar compounds using existing neuromorphic chemical sensors. In this study, we present an artificial olfactory system (AOS), developed through integration human receptors (hORs) synapses. This AOS is...
Multifunctional hydrogels with properties including transparency, flexibility, self-healing, and high electrical conductivity have attracted great attention for their potential application to soft electronic devices. The presence of an ionic species can make conductive in nature. However, the is often influenced by temperature, due change internal nano/microscopic structure when temperature reaches sol-gel phase transition temperature. In this regard, introducing a novel surface-capacitive...
Chiral metamaterials have received significant attention due to their strong chiroptical interactions with electromagnetic waves of incident light. However, the fabrication large-area, hierarchically manufactured chiral plasmonic structures high dissymmetry factors (g-factors) over a wide spectral range remains key barrier practical applications. Here we report facile yet efficient method fabricate hierarchical nanostructures large area (>11.7 × 11.7 cm2) and g-factors (up 0.07 in visible...
Abstract Control over the morphology and crystallinity of metal halide perovskite materials is key importance to enable high‐performance optoelectronics. Here, a simple yet effective template‐free self‐assembly synthesis granular wires with ultrahigh photodetectivity (3.17 × 10 15 Jones) reported. The 1D grains driven by differences in surface interaction energies facets. superb photodetecting performance originates from extremely low dark current engendered energetic barriers featuring...
Abstract The recent development of neuromorphic devices with low power consumption and rapid response has been driven primarily by the growing demand for brain‐inspired computing in human‐like machines human‐machine interfaces. Remarkable progress made developing bioelectronics that combine electronic sensors. In this review, we provide an overview semiconducting polymer‐based their applications bioelectronics. We focus on advances three‐terminal artificial synapses mimic neural...
Plasmonic nanostructures can enhance the performance of photodetectors (PDs) owing to their amplification effect in light absorption, leading overcoming inherent properties photoactive layer. Herein, hierarchical plasmonic nanopatterns have been prepared and used for high‐performance flexible perovskite PDs. The developed nanostructures, featuring nanoposts on cross‐nanograting patterns, exhibit a notably enhanced trapping compared based unidirectional simple nanograting structure. Moreover,...
Abstract Hybrid materials in optoelectronic devices can provide synergistic effects that complementarily enhance the properties of each component. Here, flexible high-performance graphene hybrid photodetectors (PDs) are developed by introducing gold nanostars (GNSs) and perovskites for strong light trapping with hot electron transfer efficient harvesting characteristics, respectively. While pristine PDs do not exhibit discernible photodetection due to very low photon absorption ultrafast...
Abstract 2D perovskite (PVSK) single crystals have received significant attention due to their unique optical and optoelectronic properties. However, current synthesis methods face limitations, particularly in large‐area fabrication, which remain critical barriers practical applications. In this study, the of red/green/purple‐blue‐colored PVSK nanocrystals over a large area (4‐inch wafer) fabrication high‐performance photodetector arrays are presented via facile yet efficient spray‐coating...
Near-infrared (NIR) photodetectors play crucial roles in many scientific, industrial, and medicinal fields. However, conventional organic (OPDs) often do not utilize the NIR region due to poor absorption beyond 1000 nm. In this study, an open-shell conjugated terpolymer is synthesized for detection. This polymer contains diketopyrrolopyrrole (DPP), thiophene, benzo[1,2-c;4,5-c']bis[1,2,5]thiadiazole (BBT); these components form novel random...
Hybrid photovoltaics (HPVs) incorporating both organic and inorganic semiconducting materials have attracted much attention as next-generation because of their advantage combining materials. The hybridization ZnO nanowires (NWs) semiconductors is expected to be a suitable approach overcome the limited exciton diffusion length low electron mobility associated with current photovoltaics. use NWs allows researchers tune nanoscale dimensions more precisely achieve rod-to-rod spacing below 10 nm....
Abstract Transition metal dichalcogenide MoS 2 is a two-dimensional material, attracting much attention for next-generation applications thanks to rich functionalities stemming from its crystal structure. Many experimental and theoretical works have focused on the spin-orbit interaction which couples valley spin degrees of freedom so that spin-states can be electrically controllable. However, charge carriers atomic vacancies in devices not been yet elucidated directly microscopic viewpoint....
In article number 2002357, Sang Kyu Kwak, Joon Hak Oh, and co-workers synthesize perovskite granular wires by a simple yet effective template-free self-assembly. Superb photodetection performance with unprecedentedly high photodetectivity is exhibited, which originates from the low dark current due to band-edge modulation along long axis of wires. This "self-assembled nanograin engineering" strategy provides viable method for development high-performance photodetectors can be extended other...
Abstract Organic electrochemical transistors (OECTs) are promising for neuromorphic architectures as they can generate multiple electrical states through the control of ion transport. However, conventional OECTs face limitations in mimicking a fully functional biological synapse due to their inability achieve long‐term plasticity. In this study, metal‐organic framework (MOF)‐enhanced OECT (MOECT) is fabricated by introducing MOF into ion‐organic semiconductor (OSC) layer. MOFs synthesized...
Transition metal dichalcogenide MoS2 is a two-dimensional material, attracting much attention for next-generation applications thanks to rich functionalities stemmed from the crystal structure. Many experimental and theoretical works have focused on spin-orbit interaction which couples valley spin degree of freedom so that spin-states can be electrically controllable. However, charge carriers vacancies not been yet elucidated directly microscopic viewpoint. We report in thin-film electric...