A5009634583- Luminescence Properties of Advanced Materials
- Perovskite Materials and Applications
- Radiation Detection and Scintillator Technologies
- Solid-state spectroscopy and crystallography
- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Ion-surface interactions and analysis
- Glass properties and applications
- Gas Sensing Nanomaterials and Sensors
- Nuclear materials and radiation effects
- Quantum Dots Synthesis And Properties
- Ammonia Synthesis and Nitrogen Reduction
- ZnO doping and properties
- Advanced Photocatalysis Techniques
- Crystal Structures and Properties
- Solid State Laser Technologies
- Crystallization and Solubility Studies
- Semiconductor materials and devices
- Organic and Molecular Conductors Research
- Metal and Thin Film Mechanics
- Microwave Dielectric Ceramics Synthesis
- Advanced Memory and Neural Computing
- GaN-based semiconductor devices and materials
- Metal Alloys Wear and Properties
- Advanced machining processes and optimization
National Taiwan Normal University
2022-2024
National Taiwan University
2022-2023
Institute of Physics, Academia Sinica
2022
National Yang Ming Chiao Tung University
2017-2021
University of the Free State
2014-2020
National Hsinchu University of Education
2018
Indian Institute of Technology Dhanbad
2013-2018
Clinvet
2016
This paper reports on the defect correlated self-quenching and spectroscopic investigation of calcium titanate (CaTiO3) phosphors. A series CaTiO3 phosphors doped with trivalent europium (Eu3+) codoped potassium (K+) ions were prepared by solid state reaction method. The X-ray diffraction results revealed that obtained powder consisted out a single-phase orthorhombic structure it also indicated incorporation dopants/co-dopants did not affect crystal structure. scanning electron microscopy...
A series of CaMoO4 phosphors doped with trivalent dysprosium (Dy3+) and codoped potassium (K+) ions were prepared by hydrothermal method. The nanostructures the as-synthesized investigated X-ray diffraction (XRD). results reveal that obtained powder are single-phase scheelite structure tetragonal symmetry crystallite size is in range 10–60 nm. emission spectra show a bright yellow at 576 nm blue 487 As charge compensator, K+ incorporated into CaMoO4:Dy3+ phosphors, which enhance PL...
A comparative investigation on the structural and photoluminescence properties of Y<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup>phosphor prepared by different routes such as sol-lyophilisation, combustion, hydrothermal microwave assisted has been reported for first time.
A series of Dy<sup>3+</sup>/K<sup>+</sup> doped calcium molybdate phosphors were synthesized by a hydrothermal synthesis method and structural, photoluminescence decay studies carried out.
The development of an efficient blue phosphor with remarkable thermal stability required for high-quality white-light-emitting diodes (WLEDs) remains exigent task and mainly concerned BaMgAl10O17:Eu2+ (BAM:Eu). Despite the outstanding performance BAM:Eu, reduction in luminescence efficiency under long-term operation results numerous researches on new hosts having lattice rigidity symmetrical coordination environment. Therefore, we have synthesized a competent blue-emitting Eu2+-activated...
Er<sup>3+</sup>/Yb<sup>3+</sup> and Er<sup>3+</sup>/Ho<sup>3+</sup>/Yb<sup>3+</sup> codoped La<sub>2</sub>CaZnO<sub>5</sub> phosphors were prepared by the combustion synthesis method. The Er<sup>3+</sup>/Yb<sup>3+</sup>-codoped sample exhibited strong green red UC emissions. are suitable for future applications in thermometry.
In recent years, perovskite quantum dots (PQDs) with the incorporation of transition-metal ions for reducing toxicity and enhancing stability have been in a research hotspot. However, PQDs containing are quite unstable display low photoluminescence yields (PLQYs), owing to existence defects. Herein, we endeavored introduce simultaneous cation anion exchange cobalt chloride into host CH3NH3Pb1–xCoxBr3–2xCl2x followed by matrix encapsulation via poly(methyl methacrylate) (PMMA) as favorable...
The layered, lead-free hybrid perovskites are superior in organic electronics compared to their three-dimensional (3D) counterparts due facile synthesis and promising stability various environmental conditions. To learn more about the multifunctional side of such materials, a layered perovskite (EDA)CuCl4 [EDA is (CH2)2(NH3)2] crystal was grown solution crystallographically characterized by single-crystal X-ray diffraction. thermally very stable exhibits high reversible thermochromic working...
Yb3+/Er3+-codoped GdBiW2O9 phosphors are prepared via the solid-state route for application in upconversion temperature sensors. The structural analyses indicate that all possess a single-phased orthorhombic structure. Upon excitation of laser wavelength 980 nm, emanate green emission peaks, endorsed to 4I15/2 state from 4S3/2 and 2H11/2 states, respectively, weak (red) 4F9/2 Er3+ ion. mechanism has been elucidated scheme energy levels conferred pump power-induced characteristics....
We present a facile room temperature synthesis of CH3NH3Pb1-x Mn x I3 perovskite quantum dots (PQDs) substituting manganese (Mn2+) at the lead (Pb2+) sites to minimize environmental pollution and make it commercially feasible. By varying concentration Mn2+ from 0 60%, PQDs exhibit strong color tunability red orange suggesting successful energy transfer due inclusion. observed high external photoluminescence yield (PLQY) 98% for unsubstituted CH3NH3PbI3 >50% up 15% substituted PQDs. The...
The present paper reports a new phosphor material for WLED application with high CRI, low CCT and colour stability.