This study synthesized BaMoO4:Eu red phosphors using the microwave method. In addition, the phase composition, morphology, and luminescence properties of the red phosphors were characterized using X-ray diffraction, field-scanning electron microscopy, and photoluminescence spectroscopy. The results revealed that doping red phosphors with different concentrations of Eu does not change the crystal structure of the matrix material. The BaMoO :Eu phosphors exhibited micron-scale irregular polyhedra, which could be excited by ultraviolet light with a wavelength of 395 nm to induce red-light emission. The optimal dosage of Eu was 0.08, and the chromaticity coordinates of BaMoO :0.08Eu phosphors were (0.5869, 0.3099). White light-emitting diode (w-LED) devices manufactured by using a combination of BaMoO :0.08Eu phosphor and commercially available phosphors exhibited good white-light emission under the excitation of an ultraviolet chip. The BaMoO :0.08Eu red phosphors that rapidly synthesized under the microwave field are expected to be used in w-LED devices.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1002/bio.4510 | DOI Listing |
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
College of Chemical and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022 China.
In recent years, it has become a development trend to design multi-application luminescent materials with rare earth ion doping. In this work, a series of Eu/Sm doped self-activated NaYMgVO (NYMVO) phosphors were synthesized through a simple high-temperature solid-state reaction method. Interestingly, due to the energy transfer (ET) from the matrix to the activators, the luminescence color of the phosphors changed from turquoise to orange-red and yellow-green under near-ultraviolet (n-UV) 365 nm excitation.
View Article and Find Full Text PDFLuminescence
January 2025
Department of Display Science and Engineering, Pukyong National University, Busan, Republic of Korea.
The influence of Eu concentration on the crystal structure and photoluminescence (PL) properties of Ca(PO):xEu (0.06 ≤ x ≤ 0.10) phosphors is systematically investigated using X-ray diffraction (XRD) Rietveld refinement, scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, UV-visible spectroscopy, and PL spectroscopy.
View Article and Find Full Text PDFMater Horiz
January 2025
School of Physical Science and Technology, School of Chemistry and Chemical Engineering, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
Metal halides are widely applied in solid-state lighting (SSL), optoelectronic devices, information encryption, and near-infrared (NIR) detection due to their superior photoelectric properties and tunable emission. However, single-component phosphors that can be efficiently excited by light-emitting diode (LED) chips and cover both the visible (VIS) and NIR emission regions are still very rare. To address this issue, (TPA)ZnBr:Sn/Mn (TPA = [(CHCHCH)N]) phosphors were synthesized by using the solvent evaporation method.
View Article and Find Full Text PDFDalton Trans
January 2025
School of Rare Earths, University of Science and Technology of China, Hefei 230026, P. R. China.
Although the green light emission of Tb ions can be effectively improved by utilizing energy transfer from Eu to Tb ions, obtaining phosphors with high quantum efficiency remains a major problem. Here, we have achieved a novel apatite-type structure CaLa(PO)O (CLPO) containing Eu and Tb ions. The CLPO:Eu is capable of being effectively excited by near-ultraviolet light and emits blue light at about 460 nm.
View Article and Find Full Text PDFLuminescence
January 2025
College of Science, Sichuan Agricultural University, Ya'an, Sichuan, China.
In this paper, a series of BaSrCaWO:x%Mn, y%La (x = 0.1, 0.5, 0.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!