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- W772596927 abstract "A spectroscopic investigation of 1% Dy2O3-singly doped and 0.5% Ce2O3-1.0% Dy2O3-codoped zinc–sodium–aluminosilicate glasses was performed by analyzing their absorption and photoluminescence spectra, and decay times. Warm white yellow light emission, with (0.419, 0.440) CIE1931 chromaticity coordinates and 3579 K color temperature, is obtained in the Dy3+-singly doped glass excited at 399 nm, which fits to the requirements of GaN LEDs. A quantum efficiency of 74% and a very high optical gain (38.7×10−25 cm2 s) were estimated for the dysprosium 4F9/2 level luminescence, which might also make the Dy3+-doped glass a promising gain medium for solid state yellow laser pumped by GaN LEDs. In the Ce3+/Dy3+-codoped glass a radiative energy transfer from Ce3+ to Dy3+ is observed upon UV excitation (310–365 nm), with a Ce3+ to Dy3+ interaction distance that could be greater than 6–12 Å. The emission color from the codoped glass can be tuned with the excitation wavelength from blue light (0.247, 0.245), upon 310 nm excitation, to cold white light (0.284, 0.300), with a 9052 K color temperature, upon 365 nm excitation." @default.
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- W772596927 date "2015-11-01" @default.
- W772596927 modified "2023-10-17" @default.
- W772596927 title "White light generation in Dy3+-and Ce3+/Dy3+-doped zinc–sodium–aluminosilicate glasses" @default.
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- W772596927 doi "https://doi.org/10.1016/j.jlumin.2015.07.004" @default.
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