Structural and photoluminescent studies of SrAl2O4: Dy3+, Ce3+ phosphors

Hereby, we report the structural and photoluminescent properties of Sr1-xDyx-zCezAl2O4 [x = 0.03, 0.02, 0.01 and z = 0.01. 0.02 and 0.03 respectively] phosphors. The sample synthesis was successfully carried out by solid state reaction route. The crystal structure and the type of phase formed was witnessed by X-ray diffraction characterization where the spectra analysis revealed that the as synthesized samples have crystallized into the monoclinic phase with the assigned space group of P21/n. The samples were observed to have the presence of additional phase corresponding to SrCO3. The XRD results were further confirmed through the Fourier Transform Infra-Red (FTIR) characterization technique where fingerprint absorption peaks confirm the XRD results. Photoluminescent studies revealed the highly intense broad glow curve corresponding to the Ce3+ presence in SrAl2O4 matrix around 390 nm whereas the weak and broad glow curves corresponding to the Dy3+ are observed in the higher region of visible range of electromagnetic spectrum.