Synthesis and Characterization of CaYSi2Al2O2N5:Eu2+

ABSTRACT Eu 2+ ‐activated CaYSi 2 Al 2 O 2 N 5 phosphors have been prepared by the modified three‐step solid‐state diffusion method. Prepared phosphors are characterized by XRD, SEM, photoluminescence techniques, and chromatic properties. Upon excitation at 330 nm, the Eu 2+ ‐activated CaYSi 2 Al 2 O 2 N 5 phosphor shows a single strong broad emission at 455 nm in the blue region of the optical spectrum. The variation of intensity with dopant concentration was studied, and the quenching was observed at 1 mol%. The Stokes shift is also calculated. It was found that the obtained samples may be suitable for UV‐excited white light‐emitting diodes.