Photoluminescence Properties of Eu³⁺ doped KAl(SO4)2 Phosphor

Abstract A series of KAl(SO4)2 phosphors with different Eu3+ doping concentrations have been synthesized by solid-state reaction method. In the present work, the properties of synthesized Eu3+ doped KAl(SO4)2 phosphors have been examined by XRD, Photoluminescence (PL), and photometric characterization techniques. Under Near Ultraviolet (NUV) and blue excitation at 395nm and 466nm, PL emission spectra observed at 593nm and 614nm, which are ascribed due to 5D0→7F1 and 5D0→7F2 transition of Eu3+ ions. The emission band of 614 nm indicates the highest emission intensity compared to the 593 nm emission band. The PL emission spectra depict maximum intensity at 0.7mol% doping of Eu3+ ions. In addition, the synthesized Eu3+ activated KAl(SO4)2 phosphors show good color chromaticity coordinates, which is lies in the orange-red region. All these results indicated that the synthesized Eu3+ activated KAl(SO4)2 phosphors have potential results for future work in the field of solid state lighting.