Red Light Emitting Eu 3+ Doped Bismuth Yttrium Tungstate Phosphor for Solid State Lighting Applications

ABSTRACT The crystalline monoclinic phase of Eu 3+ doped bismuth yttrium tungstate (BiYWO 6 : Eu 3+ ) phosphors have been synthesized via the sol‐gel combustion (SGC) procedure. X‐ray diffraction (XRD) outcomes indicate the pure monoclinic crystalline phase formation of the BYW: Eu 3+ phosphors. The irregular shape and agglomerated dense packaging of the particles of BYW: Eu 3+ phosphors have been revealed with the help of field emission scanning electron microscopy (FE‐SEM) analysis. Diffuse reflectance spectra (DRS) revealed the numerous absorption peaks in the UV and visible regions. When excited with blue light, the BYW: Eu 3+ phosphors radiate several emission peaks and an intense emission peak has been observed at 613 nm (red region). CIE coordinates of the BYW: Eu 3+ phosphors are positioned in the red section of the chromaticity diagram. The aforementioned results of the BYW: Eu 3+ phosphors indicate their promising properties for usage in the field of white light emitting diodes (WLEDs) and other photonic device applications.