期刊
OPTICAL AND QUANTUM ELECTRONICS
卷 53, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1007/s11082-021-02966-0
关键词
Bismuth borosilicate glasses doped with Dy+3; XRD; FTIR; absorption; excitation and emission spectroscopy; White light; Chromaticity diagram
Glass samples with varying composition were prepared and analyzed for absorption and emission spectra, revealing a decrease in PL intensity with increasing Bi2O3 content, while all fundamental parameters closely matched the standard values for high Bi2O3 content glass samples.
The glass samples with composition (30 SiO2-5 TeO2-1.0 Dy2O3-(65-x) B2O3-xBi(2)O(3)) where x = 5, 15, 25, 35, 45 and 50 mol% were prepared by melt quenching method. The glassy state was confirmed by the X-ray diffraction. Fourier transformation infrared, physical properties (density, ion concentration, molar volume, Polaron radius, inter-nuclear distance, refractive index, optical bandgap) absorption spectra, excitation, and emission spectra have been analyzed. The absorption spectrum shows five bands with a hypersensitive transition corresponding to H-6(9/2) (7911 cm(-1)) at 1256 nm. The emission spectra showed two intense emission bands around 480 nm and 575 nm corresponding to the F-4(9/2) -> H-6(15/2) and F-4(9/2) -> H-6(13/2) transition. PL intensity decreases with increasing the Bi2O3 content. All values of the fundamental parameters (The color coordinates, Y/B ratio, and color rendering index (CRI)) are very close to the standard value for the glass samples with high Bi2O3 content.
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