MICROWAVE-SYNTHESIZED Sr₂ZnMoO₆:Eu³⁺ PHOSPHORS IN TeO₂–ZnO–BaO GLASS: STRUCTURAL, OPTICAL, AND LUMINESCENCE PROPERTIES FOR POTENTIAL REDDISH-ORANGE SSL APPLICATIONS
DOI:
https://doi.org/10.55766/sujst5924Keywords:
Phosphors-in-glass, Microwave synthesis, Photoluminescence, Eu³⁺ ionAbstract
The Sr2ZnMoO6 phosphor was incorporated into TeO2: ZnO: BaO glass using the microwave synthesis, with different amount of phoshors (0.00, 2.50, 5.00, 7.50, and 10.00 wt%). The samples were characterized through density, refractive index, XRD, FTIR, absorption spectra, luminescence properties, and lifetime analysis. The crystalline structure was analyzed by using X-ray diffractometer and compared with the standard Sr2ZnMoO6 crystal structure. Absorption spectra analysis showed four peaks associated with the transitions of Eu3+ ion, while photoluminescence was observed between 550 and 725 nm when excited at 465 nm. The emission intensity increased as the concentrations of Sr2ZnMoO6 phosphor increased up to 7.50 wt%, after which it decreased. These samples exhibited a high photoluminescence quantum yield of 56.49%, with the high-intensity peak observed at 614 nm, corresponding to the 5D2 → 7F0 (reddish orange) transitions of Eu3+ ion. The luminescence lifetime values from the 5D2 → 7F0 state decreased (0.891, 0.886, 0.880, and 0.874 ms) by adding a concentration of phosphors, The results indicate that these samples have the potential to be used in solid-state lighting applications.
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