Physical studies on the enhancement of photoluminescence properties for blue BaAl₂Si₂O₈:Eu²⁺ phosphors via LPP method with addition of silicate concentrations

BaAl₂Si₂O₈: Eu²⁺ + xSiO₂ (x = 0, 1, 2 and 3) has been synthesized with phosphors via novel liquid phase precursor (LPP) method. The best crystalline BaAl₂Si₂O₈: Eu²⁺ phosphor could not be synthesized as the calcination temperature is inadequate fully to crystalize the phosphor leading to the crystal and amorphous. Albeit, the firing temperature is insufficient so as to form the fine crystal, the added excess SiO₂ could act as an additive for the crystallization of the phosphor. As a function of SiO₂, the size of the crystal has been augmented and formed fine crystals with the concentration of added SiO₂. Moreover, the added excess SiO₂ makes SiOC: Eu²⁺ phosphor as a deep blue illumination at 440 nm. Photoluminescence intensity of the phosphors is increased continuously by the addition of SiO₂ heretofore x = 3. In the present investigation, an attempt has been made to synthesize and observe carefully for photoluminescence properties with regard to the crystalline structure, optical property and surface morphology.