Synthesis and photoluminescence properties of Dy3+, Sm3+ activated Sr5SiO4Cl6 phosphor

Dy3+ and Sm3+ doped Sr5SiO4Cl6 phosphors were prepared by the modified solid state method and their luminescent properties were studied. From a powder X-ray diffraction (XRD) analysis the formation of Sr5SiO4Cl6 was confirmed. In the photoluminescence emission spectra, the Sr5SiO4Cl6:Dy3+ phosphors show efficient blue and yellow band emissions, which originates from the 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions of Dy3+ ion, respectively. Photoluminescence properties of Sm3+ doped Sr5SiO4Cl6 phosphor exhibited characteristic orange-red emission coming from the intra-4f-shell 4G5/2 →6HJ electron transitions.