Luminescent materials and spectroscopic properties of Dy3+ ion

Dy3+ ion can be used as a dopant for electron trapping materials such as long-lasting phosphorescence (LLP) or solid dosimeter. Due to the special electron trapping and thermoluminescent properties of the materials doped with Dy3+, LLP such as SrAl2O4: Eu2+,Dy3+ or glass ceramic SrO–Al2O3–B2O3: Eu2+,Dy3+ and solid dosimeter such as BaB4O7:Dy3+ and SrB4O7:Dy3+ were prepared. Dy3+ ion can also be used for lighting by mixing its yellow 4F9/2→6H13/2 and blue 4F9/2→6H15/2 emission bands as in high-pressure mercury lamp phosphor Y0.79Gd0.20V0.5P0.5O4: 0.01Dy. In this paper, the VUV excitation spectra and visible emission spectra of Sr3Gd0.94(PO4)3:0.06Dy, Ba3Gd0.94(PO4)3:0.06Dy and Ca4.99(PO4)3F: 0.01Dy with chromaticity coordinates in the white-light region are described. They have potential application for mercury-free fluorescence lamp.