A5048244785- Electronic and Structural Properties of Oxides
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Magnetic and transport properties of perovskites and related materials
- ZnO doping and properties
- Transition Metal Oxide Nanomaterials
- Gas Sensing Nanomaterials and Sensors
- Ferroelectric and Piezoelectric Materials
- Physics of Superconductivity and Magnetism
- Microwave Dielectric Ceramics Synthesis
- Advanced Condensed Matter Physics
- Luminescence Properties of Advanced Materials
- Semiconductor materials and devices
- Ga2O3 and related materials
- Surface Roughness and Optical Measurements
- Acoustic Wave Resonator Technologies
- Stellar, planetary, and galactic studies
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- TiO2 Photocatalysis and Solar Cells
- Magneto-Optical Properties and Applications
- Advanced Memory and Neural Computing
- Electrical and Thermal Properties of Materials
- Underwater Acoustics Research
- Catalytic Processes in Materials Science
National Institute of Advanced Industrial Science and Technology
2014-2023
Kwansei Gakuin University
2023
Tokai University
2011-2020
Shimonoseki City University
2003-2020
Ibaraki University
2019
Tohoku University Hospital
2018
The University of Tokyo
1989-2014
Ceramic Society of Japan
2014
Tokyo Institute of Technology
2014
National Institute of Technology, Gifu College
2013
The internal luminescence quantum efficiency and color properties of AVO3 (A: Li, Na, K, Rb, Cs), M2V2O7 (M: Mg, Ca, Sr, Ba, Zn), M3V2O8 Zn) have been investigated. These vanadate phosphors exhibited broadband emission from 400 nm to over 800 due the one-electron charge transfer transition in VO4 tetrahedra, luminescent materials ranged green yellow-orange via white, corresponding 0.277 < x 0.494 0.389 y 0.488 on CIE chromaticity diagram. We found that with tetrahedra was strongly enhanced...
It has been pointed out that agricultural crops and other natural plants may be damaged by outdoor lighting systems. Therefore, does not affect plant growth is needed. To address this problem, we have prepared a new whitlockite-like phosphate Dy-phosphor Ca8MgY1-x-yLaxDyy(PO4)7, which exhibits yellow-white Dy(3+) luminescence maximum internal quantum efficiency of 65.6% under 387 nm excitation light for x = 0.10 y 0.05. The dependence IQE showed two maxima at 0.10-0.15 0.80-0.85, could due...
Efficient formation of black titania photoanodes that had 2.6-fold higher solar-to-hydrogen efficiency than a pristine film was achieved by pulsed UV laser irradiation.
Internal quantum efficiency of CsVO<sub>3</sub> was considerably enhanced up to 95.8%, and a rare earth free white LED that had very high color rendering index 91.1 realized by using deep red phosphor Mg<sub>2</sub>TiO<sub>4</sub>:Mn<sup>4+</sup>.
We prepared WO<sub>3</sub> nanosponge photoanodes by nanoparticle/solution hybrid dispersion–deposition for production of “high-value-added” reagents.
We have studied the epitaxial growth of perovskite manganite LaMnO3 (LMO) on SrTiO3(100) and LaAlO3(100) substrates by means chemical solution deposition assisted pulsed UV laser irradiation, termed excimer laser-assisted metal organic (ELAMOD). Cross-sectional transmission electron microscopy observations revealed that LMO was crystallized from a coated amorphous matrix preferentially grown substrate surface. In this process, optical absorbance for irradiated plays an essential role...
We investigate the cloud detection efficiency of existing and future spaceborne visible-to-infrared imagers, focusing on several threshold tests for over different types ground surfaces, namely, ocean, desert, vegetation, semibare land, cryosphere. In this investigation, we used CLoud Aerosol Unbiased Decision Intellectual Algorithm (CLAUDIA), which was developed unbiased detection. It revealed that imagers with fewer bands than Moderate Resolution Imaging Spectroradiometer tend to have...
High-speed image transmission f ram it research submersible to the mother ship is desirable facilitate effective deep-sea by submersible.
Phonon modes in GaAs/AlAs superlattices have been calculated a valence-force-field model characterized by bond-stretching and -bending forces fixed effective charge. They mixed characters of the results linear-chain dielectric continuum model. There exist localized interface at transverse X point characteristic zinc-blende structure. A is proposed that can reproduce long-wavelength optical phonons almost exactly simple enough to be used various applications such as calculation quantities...
V 1- x Ti O 2 films were prepared on glass substrates by excimer-laser-assisted metal organic deposition (ELAMOD) and thermal MOD processes. The VO phase was successfully formed in the range of = 0–0.35 at 300 °C air using ELAMOD process. This is a big advantage terms fabrication process for or substrates. It also confirmed that dense obtained preparing TiO buffer layers Furthermore, detailed effect content metal–insulator (MI) transition properties examined. As increased, broadening MI...
A Dy-based phosphor converted white light emitting device is promising for creating new lightings that preserve natural plant habitats.