Improvement of luminescence intensity of Ba₃Si₆O₁₂N₂:Eu²⁺ by flux treatment

Abstract

A post flux treatment was carried out for Ba₃Si₆O₁₂N₂ doped with Eu²⁺ synthesized by an aqueous solution method. After the flux treatment, impurity phases of BaSi₂O₅ and Ba₃Si₆O₉N₄ were eliminated, resulting in the formation of a highly crystalline Ba₃Si₆O₁₂N₂:Eu²⁺ phase. The emission peak intensity of the sample after the flux treatment was ca. 3.1 times greater than that of the sample before the flux treatment.