Abstract
Tb3+-activated Sr3Gd(BO3)3 green phosphors were prepared by conventional solid-state reaction. The vacuum ultraviolet (VUV) excitation, photoluminescence (PL) and decay properties of the phosphors in the visible range were investigated. The excitation spectrum showed a strong broad band from 160 to 200 nm with a maximum at 183 nm which was adjacent to the VUV excitation light source of 172 nm. Under excitation at 172 nm, the optimum co-doping concentration of Tb3+ was 10 mol%, and the emission intensity of Sr3Gd0.9(BO3)3:0.1Tb3+ was comparable to that of commercial Zn2SiO4:Mn2+. The strongest emission peak of Sr3Gd0.9(BO3)3:0.1Tb3+ was at 543 nm with chromaticity coordinates of (0.2626, 0.4922) and a lifetime of 2.32 ms. The optical properties of the green phosphor Sr3Gd(BO3)3: Tb3+ make it suitable for use in Hg-free fluorescent lamps and plasma display panels.
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Zhao, W., Gao, S., An, S. et al. The luminescence properties of Sr3Gd(BO3)3: Tb3+ phosphors under vacuum ultraviolet excitation. Chin. Sci. Bull. 57, 4513–4516 (2012). https://doi.org/10.1007/s11434-012-5418-2
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DOI: https://doi.org/10.1007/s11434-012-5418-2