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Synthesis, Structural, and Photoluminescence Studies of Tb3+ Activated Y2SiO5 Phosphor for Display Devices.
- Source :
-
Journal of Applied Spectroscopy . Mar2024, Vol. 91 Issue 1, p154-158. 5p. - Publication Year :
- 2024
-
Abstract
- The synthesis and luminescence analysis of Tb3+-activated phosphors were reported. Y2SiO5 phosphors were synthesized by a modified solid-state reaction method with a variable doping concentration of Tb3+ ion (0.5–2.5 mol.%). As synthesized, the phosphors were characterized by X-ray diffraction (XRD) analysis. The XRD pattern confirmed the monoclinic structure of the prepared phosphor. Scanning electron microscopy and High-Resolution Transmission Electron Microscopy (HRTEM) studies revealed nearly uniform particle size distribution in the prepared phosphors. The photoluminescence excitation spectra of the Y2SiO5:Tb3+ (0.5–2.5 mol.%) phosphor displayed one broad, intense peak at 258–277 nm. When excited at the 258 nm wavelength, the phosphors showed emission peaks at 553 nm (5D4 → 7F5), 544 nm (5D4 → 7F5) and 489 nm (5D4 → 7F6). The 1931 CIE (x,y) chromaticity coordinates showed the distribution of the spectral region calculated from the photoluminescence emission spectra. The values of x = 0.25 and y = 0.46 were very close to light green emission. Therefore, the prepared phosphor is very useful for light-emitting diode (green component) applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219037
- Volume :
- 91
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 176265447
- Full Text :
- https://doi.org/10.1007/s10812-024-01701-3