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Structure and luminescence properties of CaWO4-EuMO4 (M=Nb, Ta) solid solution
- Source :
- Journal of Luminescence. 211:183-192
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- The 0.8CaWO4-0.2EuMO4 (M = Nb, Ta) solid solution and Eu3+, Ta5+ and Nb5+ single doped CaWO4 were prepared by a high-temperature solid state reaction technique. Experiments show that the addition of Nb5+ and Ta5+ can increase the red luminescence of Eu3+ in CaWO4. In this paper, the composition and structure of solid solution were analyzed by X ray diffraction (XRD), Fourier transform infrared spectrum and Raman spectrum analysis. The luminescence properties of the solid solution were studied by means of stable photoluminescent spectra, diffuse reflectance spectra (DRS), fluorescent decay curves and variable temperature spectra. By combining structural analysis, J-O theoretical calculation and experimental results, we believe that the significant improvement of the emission efficiency comes from the decrease of non-radiation relaxation rate.
- Subjects :
- Materials science
Photoluminescence
Infrared
Biophysics
Analytical chemistry
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Biochemistry
Fluorescence
Atomic and Molecular Physics, and Optics
Spectral line
0104 chemical sciences
symbols.namesake
X-ray crystallography
symbols
0210 nano-technology
Luminescence
Raman spectroscopy
Solid solution
Subjects
Details
- ISSN :
- 00222313
- Volume :
- 211
- Database :
- OpenAIRE
- Journal :
- Journal of Luminescence
- Accession number :
- edsair.doi...........8ea016c56ead57ed1c1d78d075f3db6e