A5077516851- Nanomaterials and Printing Technologies
- Advanced Sensor and Energy Harvesting Materials
- Electronic Packaging and Soldering Technologies
- TiO2 Photocatalysis and Solar Cells
- 3D IC and TSV technologies
- Conducting polymers and applications
- Aluminum Alloys Composites Properties
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Quantum Dots Synthesis And Properties
- Mesoporous Materials and Catalysis
- Diamond and Carbon-based Materials Research
- ZnO doping and properties
- Advanced Materials and Mechanics
- Nanofabrication and Lithography Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Copper Interconnects and Reliability
- Copper-based nanomaterials and applications
- Nanowire Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Semiconductor materials and devices
- Advanced Nanomaterials in Catalysis
- Analytical Chemistry and Sensors
- Transition Metal Oxide Nanomaterials
- Organic Light-Emitting Diodes Research
Senju Pharmaceutical (Japan)
2016-2022
Osaka University
2012-2021
Osaka Research Institute of Industrial Science and Technology
2012-2021
Denso (Japan)
2016
Nitto (Japan)
2016
Osaka Health Science University
2016
Kyoto University Institute for Chemical Research
2005-2007
Kyoto University
2002-2007
Kyoto Bunkyo University
2006-2007
Tianjin University
2006
The same equation was derived from two different impedance models based on the quite physical descriptions proposed by Kern et al.(1) and Bisquert.(2,3) Reliable values of parameters relating to electron transport in dye-sensitized solar cells can be determined measured spectra electrochemical spectroscopy when careful analysis is done classification clarification consequent models. requisites for making highly efficient were proposed.
In this study, single-crystal-like anatase TiO(2) nanowires were formed in a network structure by surfactant-assisted self-assembling processes at low temperature. The crystal lattice planes of the and networks such wires composed many nanoparticles almost perfectly aligned with each other due to "oriented attachment" mechanism, resulting high rate electron transfer through nanonetwork nanowires. direction growth oriented attachment was controlled changing mole ratio acetylacetone Ti, that...
Highly crystalline TiO2 nanorods with lengths of 100−300 nm and diameters 20−30 have been synthesized by a hydrothermal process in cetyltrimethylammonium bromide surfactant solution. The microstructure measured X-ray diffraction high-resolution transmission electron microscopy was pure highly anatase phase long nanorod shape. addition triblock copolymer poly(ethylene oxide)100−poly(propylene oxide) 65−poly(ethylene oxide)100 (F127) decreased the length kept rod shape particles even after...
The next-generation application of pressure sensors is gradually being extended to include electronic artificial skin (e-skin), wearable devices, humanoid robotics and smart prosthetics. In these advanced applications, high sensing capability an essential feature for performance. Although surface patterning treatments some special elastomeric interlayers have been applied improve sensitivity, the process complex this inevitably raises cost obstacle large-scale production. present study a...
Silver nanowires >60 μm have been synthesized using a polyol process without stirring at 130 °C.
The requirement of energy-storage equipment needs to develop the lithium ion battery (LIB) with high electrochemical performance. surface modification commercial LiFePO4 (LFP) by utilizing zeolitic imidazolate frameworks-8 (ZIF-8) offers new possibilities for LFP performances. In this work, carbonized ZIF-8 (CZIF-8) was coated on particles in situ growth and carbonization ZIF-8. Transmission electron microscopy indicates that there is an approximate 10 nm coating layer metal zinc...
Large-scale silver nanowire (AgNW) mesh films have received increasing attention as new transparent conductive used in various printed devices. However, there are two crucial issues implementing AgNWs that need to be addressed: (1) strong adhesion between AgNW film and substrate (2) high conductivity with short treatment time for low-cost technology. Here, a high-intensity pulsed light (HIPL) sintering technique, which provides extreme heating locally the at interface polymer substrate,...
Copper nanowire (CuNW) conductors have been considered to a promising perspective in the area of stretchable electronics due low price and high conductivity. However, fabrication CuNW suffers from harsh conditions, such as temperature, reducing atmosphere, time-consuming transfer step. Here, simple rapid one-step photonic sintering technique was developed fabricate on polyurethane (PU) at room temperature air environment. It observed that CuNWs were instantaneously deoxidized, welded...
Transparent electrode based on silver nanowires (AgNWs) emerges as an outstanding alternative of indium tin oxide film especially for flexible electronics. However, the conductivity AgNWs transparent is still dramatically limited by contact resistance between at high transmittance. Polyvinylpyrrolidone (PVP) layer adsorbed nanowire surface acts electrically insulating barrier wire-wire junctions, and some devastating post-treatment methods are proposed to reduce or eliminate PVP layer, which...
The resistance of AgNW films generally increased with storage time.
Silver nanowire (AgNW) films with a random mesh structure have attracted considerable attention as high-performance flexible transparent electrodes that can replace the expensive and brittle ITO-sputtered widely used in displays, touch screens, solar cells. Methods such heating, pressure treatment, light treatment are usually to obtain an optically electrically conductive film comparable those of commercial ITO. However, adhesion between AgNW substrate is so weak other overcoatings or extra...
A novel die-attach material, Cu particle paste with self-reduction and self-protection characteristics, was designed by simply adding ascorbic acid (AA) into paste. The characteristic is due to the addition of AA paste, as it reduces oxide layer on metal Cu, even at room temperature. decomposition preventing further oxidation during sintering process. These characteristics are beneficial for particles enhancing bondability. increase bonding strength direct result concentration in joints...
Printable and flexible Cu-Ag alloy electrodes with high conductivity ultrahigh oxidation resistance have been successfully fabricated by using a newly developed hybrid ink simple fabrication process consisting of low-temperature precuring followed rapid photonic sintering (LTRS). A special Ag nanoparticle shell on Cu core structure is first created in situ precuring. An instantaneous can induce mutual dissolution between the so that core-shell structures Cu-rich phase Ag-rich (Cu-Ag alloy)...
Hybrid transparent electrodes with silver nanowires (AgNWs) and single-walled carbon nanotubes (SWCNTs) were fabricated on plastic films by a low-temperature solution process. The hybrid exhibited sheet resistance of 29.2 Ω/sq transparency 80% when 6 wt.% SWCNTs was mixed AgNWs. This less than one-fourth that the AgNW prepared using same method. reduction in is because formed bridges between AgNWs, thus, resulting high conductivity electrodes. as well excellent stability tested repeated...
To shore up the demand of transparent electrodes for wide applications such as organic light emitting diodes and solar cells, are required an alternative indium tin oxide electrodes. Herein self-assembly method with a bubble template paves way cost-effective fabrication high conductivity transparency using silver nanowires (AgNWs) in template. AgNWs were first dispersed water that was bubbled surfactant thickening agent. Furthermore, these assembled by lining along ridges. When bubbles...
We formulate copper salt (copper formate/acetate/oleate) precursor inks for photonic sintering using high-intensity pulsed light (HIPL) based on the ink's absorption ability. The can be developed through controllable crystal field splitting states (i.e., ligand weights and their coordination around metal centers). inks' properties are extremely sensitive to carbon chain lengths of ligands, ink colors drastically change. From relationship between ratios C/Cu required energies, it is possible...