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Journal of Physical Studies 15(3), Article 3702 [6 pages] (2011)
DOI: https://doi.org/10.30970/jps.15.3702 APPLICATION OF Tb3+ FOR THE ENHANCEMENT OF LUMINESCENCE INTENSITY (SENSITISATION) OF PHOSPHORS AT EXCITATION IN THE VACUUM ULTRAVIOLET REGIONV. Mikhailik
Physics Department, University of Oxford, Oxford, OX1 3RH, UK |
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The feasibilities of terbium as a luminescence sensitiser for the enhancement of the conversion efficiency of vacuum-ultraviolet (VUV) radiation into visible light was investigated. The luminescence properties of K$_{3}$Tb(PO$_{4}$)$_{2}$ and Ba$_{3}$Tb(PO$_{4}$)$_{3}$ activated by Eu$^{3+}$ and SrAl$_{12}$O$_{19}$ co-doped with Mn$^{2+}$ and Tb$^{3+}$ where measured at the excitation of over 120-300 nm wavelength range. It is shown that the Tb$^{3+}$ ions exhibiting a strong absorption band in the VUV can provide an efficient sensitisation of Eu$^{3+}$ and Mn$^{2+}$ emission at the excitation in this spectral range giving rise to intense red and green luminescence, respectively.
PACS number(s): 78.55.Hx