A5009829891- Luminescence Properties of Advanced Materials
- Radiation Detection and Scintillator Technologies
- Perovskite Materials and Applications
- Advanced Photocatalysis Techniques
- Ammonia Synthesis and Nitrogen Reduction
- Gas Sensing Nanomaterials and Sensors
- Microwave Dielectric Ceramics Synthesis
- Advanced Thermoelectric Materials and Devices
- Thermal Radiation and Cooling Technologies
- Thermal properties of materials
- Solid-state spectroscopy and crystallography
- Optical properties and cooling technologies in crystalline materials
- Glass properties and applications
- Advanced Nanomaterials in Catalysis
- Metal complexes synthesis and properties
- Ferroelectric and Piezoelectric Materials
- Nanocluster Synthesis and Applications
- Advanced Sensor and Control Systems
- Industrial Automation and Control Systems
- Multiferroics and related materials
- Transition Metal Oxide Nanomaterials
- Inorganic Chemistry and Materials
China University of Geosciences (Beijing)
2021-2024
University of Auckland
2023
Zhangzhou Normal University
2019-2020
Soochow University
2019
Liaocheng University
2015
National Institute of Standards and Technology
2012
China Institute of Atomic Energy
2012
NIST Center for Neutron Research
2012
Plant growth can be controlled and freed from natural environmental interference through indoor plant cultivation. Artificial light sources with better quality are required to promote growth. In this study, we used a simple high-temperature solid-state reaction synthesize high-efficiency Ce3+-activated NaGdSiO4 (NGSO) phosphors. X-ray diffraction Rietveld refinement were performed determine the detailed crystal structure of NGSO:Ce3+ The morphology elemental state Ce3+ measured analyzed....
Luminescent Au(I)–thiolate complexes (Au(I)–SR) are synthesized at room temperature using glutathione as both a reducing agent and capping ligand. The photoluminescence (PL) intensity emission wavelength found to be strongly affected by the pH environment during post synthesis. Although there is no Au(0) core present in these complexes, Au(I)–SR exhibit PL which can further enhanced through an aggregation-induced mechanism. structures of each stage carefully characterized. Using X-ray...
A high temperature solid state method was used to prepare Na3Gd(PO4)2:Eu2+,Mn2+ phosphors with good thermal stability. The phosphor shows a broadband excitation region of 250-430 nm, which can be matched the emissions ultraviolet (UV)/near-ultraviolet (NUV) LED chips for white light emitting diodes (w-LEDs). energy transfer efficiency is 74.46% from sensitizer Eu2+ ions activator Mn2+ ions, enhances intensities Na3Gd(PO4)2-based phosphor. In addition, by increasing doping level in phosphor,...
A white powder of oxonitridosilicate Ca3Si2O4N2 was synthesized at 1450 °C from CaCO3, Si3N4 and SiO2. The crystal structure refined using X-ray neutron diffraction data with subsequent Rietveld refinements (Rwp = 7.35 for XRD Rwp 5.53 NPD). phase has a cubic unit cell space group Pa (no. 205), parameters 15.0739(2) Å Z 24. In contrast most layered oxonitridosilicates, such as MSi2O2N2 (M Ca, Sr, Ba), Ba3Si6O9N4 Ce4Si4O5N6, is constructed highly corrugated 12-membered rings [Si12O24N12],...
Flexible thermoelectric materials are primarily composed of organic materials, which suffer from issues such as instability and poor conductivity. To overcome these limitations, this study aims to develop a cost-effective material by utilizing graphite hydroxypropyl methylcellulose raw materials. Through mechanical foaming process, graphite-based foam with porous structure is fabricated. The obtained exhibits Seebeck coefficient approximately 32 μV K−1 power factor around 0.013 μW m−1 K2....
This paper reports a sequence of Ca3 YAl3 B4 O15 :xEu3+ red phosphor prepared using high-temperature solid-state reaction. At the excitation 396 nm, samples emitted intense emission centred at ~623 which could be attributed to 5 D0 →7 F2 transition Eu3+ ion. The results showed that optimum doping concentration :Eu3+ was x = 80 mol%, and quenching mechanism belonged exchange coupling between ions. Commission Internationale de l'éclairage (CIE) coordinates colour purity Y0.2 Al3 :0.8Eu3+ were...
Recently, blue-emitting phosphors have attracted great interest due to their application in full-spectrum white light illumination. In this paper, a novel MgAl2Si4O6N4:Eu2+ phosphor was successfully synthesized through the solid-state reaction method reducing atmosphere. Under excitation of near-ultraviolet (n-UV) light, MgAl2Si4O6N4:0.02Eu2+ effectively emits broad blue emission band centered at 456 nm with FWHM as large 81 nm. With increasing Eu2+ concentration, bands shift shorter...
This design uses a simple single-chip AT98S52 as the main control module, use of external circuit to drive 16 * dot matrix LED display. The burner can be very convenient achieve microcontroller and PC other peripheral storage device data transmission, software facilitate display content diverse changes, on hand widely used in hospitals, airports, banks And public places, so that release information into dynamic screen era, has strong practical application.