A5077048602- Advanced Sensor and Energy Harvesting Materials
- Perovskite Materials and Applications
- Conducting polymers and applications
- Graphene research and applications
- Polydiacetylene-based materials and applications
- 2D Materials and Applications
- Vibration Control and Rheological Fluids
- ZnO doping and properties
- Graphene and Nanomaterials Applications
- Gas Sensing Nanomaterials and Sensors
- Luminescence Properties of Advanced Materials
- Ga2O3 and related materials
- Quantum Dots Synthesis And Properties
- Organic Electronics and Photovoltaics
- Advanced Memory and Neural Computing
- Supercapacitor Materials and Fabrication
- Advanced Thermoelectric Materials and Devices
- Advanced Photocatalysis Techniques
- Nanowire Synthesis and Applications
- Luminescence and Fluorescent Materials
- Advanced Battery Technologies Research
- Energy Harvesting in Wireless Networks
- Multiferroics and related materials
- Advanced Battery Materials and Technologies
- Surface Modification and Superhydrophobicity
Chungnam National University
2017-2024
Daejeon University
2021
Government of the Republic of Korea
2021
An eco-friendly ZnAl–LDH–PVDF composite material is demonstrated for realizing high-performance TENG <italic>via</italic> control of dielectric properties and β-phase PVDF simultaneous sensing pressure humidity in self-powered way.
A single-structured multifunctional device capable of energy harvesting and sensing multiple physical signals has significant potential for a wide range applications in the Internet Things (IoT). In this study, fabricated based on methylammonium lead iodide-polyvinylidene fluoride (MAPbI3-PVDF) composite can harvest mechanical simultaneously operate as self-powered light pressure sensor because combined photoelectric piezoelectric/triboelectric properties MAPbI3-PVDF composite....
Organotin halide perovskites are developed as an appropriate substitute to replace highly toxic lead-based hybrid perovskites, which a major concern for the environment well human health. However, instability of lead-free Sn-based under ambient conditions has hindered their wider utility in device applications. In this study, we report predominantly stable methylammonium tin bromide (MASnBr3) perovskite that air stability over 120 days without passivation conditions. Further, feasibility...
Stretchable mechanical energy harvesters are in high demand as sustainable power sources and self-powered systems for wearable electronics biomedical devices. In this study, a stretchable flexoelectric–piezoelectric nanogenerator (FPENG) composed of zinc–aluminum layered double hydroxide nanosheets–ZnO nanorods (ZnAl:LDH NSs–ZnO NRs) heterostructure is developed. The coupling the flexoelectric effect ZnAl:LDH NSs piezoelectric ZnO NRs enhances output performance FPENG. FPENG generates an...
Organometal halide perovskites become important in the photovoltaic and light emitting devices due to compositional flexibility with AMX3 formula (A is a monovalent organic ammonium cation; M metal ion; X halogen atom), imposing significant demand develop synthetic route toward new types of nanocrystals. Although chemical pathways for nanoparticles were developed on basis reprecipitation method, poor control nucleation growth process results large size polydispersity that induces ambiguities...
Sensors have recently gathered significant attention owing to the rapid growth of Internet Things (IoT) technology for real-time monitoring surroundings and human activities. Particularly, discovered nanogenerator-based self-powered sensors are potential candidates overcome existing problems conventional sensors, including regular monitoring, lifetime a power unit, portability. Halide perovskites (HPs), with an excellent photoactive nature, dielectric, piezoelectric, ferroelectric,...
The rapid advancement of wearable electronics and the Internet Things (IoT) has driven demand for sustainable power sources to replace conventional batteries. In this study, we developed a high-performance, lead-free triboelectric nanogenerator (TENG) using methylammonium tin chloride (MASnCl3) perovskite–poly(methyl methacrylate) (PMMA) composite films. MASnCl3 was synthesized via an anti-solvent-assisted collision technique incorporated into flexible PMMA matrix enhance dielectric...
Compositional tuning of organic–inorganic metal trihalide perovskites (OTPs) via halide (Cl/Br) incorporation has attracted increased attention due to the rapid advancements in performance optoelectronic devices based on mixed perovskites. It is expected that fine-tuning OTPs can significantly enhance dielectric and piezoelectric properties are beneficial for constructing a high-performance nanogenerator (PENG). However, few studies these aspects have so far been reported. In present study,...
Transparent ZnO–PTFE composite thin films deposited via RF co-sputtering are demonstrated as antireflective and antimicrobial display coatings high-sensitivity touch sensor for a wide range of applications in interactive devices safer experience.
Environmental contamination by microorganisms is a major cause of transmission several infectious diseases. Interactive touchscreen-based devices are known to be hotspots for pathogenic microorganisms, from where they spread onto the human body through contact. Therefore, an antibacterial coating can play important role in reducing microorganisms. Herein, eco-friendly and highly transparent polytetrafluoroethylene (PTFE)-coated zinc-doped silicon oxide (SZO/PTFE) thin films demonstrated as...
Developing anode materials with high specific capacity and cycling stability is vital for improving thin‐film lithium‐ion batteries. Thin‐film zinc oxide (ZnO) holds promise due to its capacity, but it suffers from volume changes structural stress during cycling, leading poor battery performance. In this research, we ingeniously combined polytetrafluoroethylene (PTFE) ZnO using a radio frequency (RF) magnetron co‐sputtering method, ensuring strong bond in the composite electrode. PTFE...
Abstract Halide perovskite, renowned for its multifunctional properties, shows considerable promise realizing self‐charging power systems. In this study, a lead‐free methylammonium bismuth iodide (MA 3 Bi 2 I 9 ) perovskite is used to create unit (SPU). This involves constructing hybrid piezoelectric‐triboelectric nanogenerator (Hybrid‐TENG) and utilizing MA energy storage as an anode in lithium‐ion battery (LIB). Initially, nanorods are synthesized composited with...
Developing self-powered and flexible optoelectronic sensors with high responsivity speed is crucial for modern applications, motivating continuous efforts to enhance their performance. Flexo-phototronics a less-explored but promising technique elevate the performance of optoelectronics. Therefore, this work addresses potential utilizing flexo-phototronic effect ultraviolet photodetector (UV PD) based on ZnAl:LDH (layered double hydroxides) nanosheets (Ns)/NiO heterostructure. The vertically...
Abstract The direct synthesis of inherently defect‐free, large‐area graphene on flexible substrates is a key technology for soft electronic devices. In the present work, in situ plasma‐assisted thermal chemical vapor deposition implemented order to synthesize 4 in. diameter high‐quality directly 10 nm thick Ti‐buffered at 100 °C. synthesized monolayer displays outstanding stretching properties coupled with low sheet resistance. Further improved mechanical and performances are achieved by...