Abstract
A series of reddish orange light-emitting NaBaLa2(PO4)3: Sm3+(NBLP:Sm3+) phosphors are designed and synthesized in this work for the first time. The crystal structure of NaBaLa2(PO4)3(NBLP) has been studied by the Rietveld refinement analysis, which shows that the NBLP belongs to eulytite-type orthophosphate. Luminescence properties of NBLP:Sm3+ phosphors were investigated in detail, including excitation and emission spectra, concentration quenching, fluorescence decay, Inokuti-Hirayama (I-H) model analysis, etc. The Commission Internationale de L'Eclairage (CIE) coordinates exhibited a shift slightly from reddish-orange (0.5782, 0.4171) to orange (0.5605, 0.4312) with the increase of Sm3+ concentration. In addition, the NBLP:Sm3+ phosphor shows good thermal stability and acceptable quantum efficiency. From the obtained results, the prepared phosphor NBLP: Sm3+ can be demonstrated as a potential orange-red luminescent material.
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