Abstract
This paper reports on the spectral analysis of reddish orange color luminescent Sm 3+:Ca 4GdO(BO 3) 3 powder phosphor. This phosphor powder has been synthesized by a solid state reaction method. Emission spectrum of it has shown four emission transitions of 4G 5/2 → 6H J ( J = 5/2, 7/2, 9/2, 11/2) and among them, the transition 4G 5/2 → 6H 7/2 displays the reddish orange (605 nm) color. Lifetimes of three emissions ( 4G 5/2 → 6H J=5/2, 7/2 & 9/2 ) have been computed based on the measured decay curves. Besides the measurement of emission spectrum of this material, its nature and structural details have also been investigated from XRD, SEM and FTIR studies.
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