Abstract
This paper reports the fluorescence properties of a new series of (La, Zn) OF:Sm 3+ powder phosphors. The measured fluorescence spectra were analyzed by computing the color coordinates ( X ̄ , Y ̄ ) and relative fluorescence intensity ratios (ED/MD). A bright yellowish-orange color was observed from these powder phosphors under a UV-source due to the confirmation of the transitions 4G 5/2→ 6H 5/2, 4G 5/2→ 6H 7/2, and 4G 5/2→ 6H 9/2. Scanning electron microscopic studies were performed to understand the average grain size of the synthesized powder phosphors.
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