Combustion Synthesis and Photoluminescence Properties of Novel Bi₂Al₄O₉:Eu³⁺ Phosphor for n-UV w-LEDs

The combustion procedure was used to synthesize Bi₂Al₄O₉:Eu³⁺ phosphors. The XRD and photoluminescence properties are investigations. The XRD patterns consist of an orthorhombic crystal structure. At 395 nm, the maximum excitation intensity was obtained. Following 395 nm excitation, two different emission peaks at 593 and 615 nm were observed. Concentration quenching occurred at 0.5 mol % Eu³⁺ ions. The CIE coordinates for the Bi₂Al₄O₉ phosphor with Eu³⁺ ion doped are 615 nm (x = 0.680, y = 0.319) falling in the red region. According to the photoluminescence results, Bi₂Al₄O₉:Eu³⁺ phosphors might be useful in the fields of near UV-excited w-LEDs.