Synthesis and the luminescent properties of NaAlSiO₄:Eu²⁺ phosphor using SiO powder as a silica source

A yellow-emitting silicate phosphor, NaAlSiO₄:Eu²⁺, was synthesized through a new reducing technique, using SiO powder as a silica source, during the preparation process. The addition of SiO powder as a silica source significantly enhanced the Eu²⁺ content, which led to an increase in the photoluminescence emission intensity of the NaAlSiO₄:Eu²⁺ phosphor. The optimization of the composition resulted in obtaining the maximum emission intensity for NaAlSiO₄:7 mol% Eu²⁺.