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Vacuum ultraviolet (VUV) spectroscopic properties of rare-earth RE3+- activated (RE3+ = Sm3+, Eu3+, Tb3+ and Dy3+) Ba6Gd9B79O138 borates (BGBO) are investigated. The strong absorption bands in the VUV range of un-doped and RE3+-activated BGBO were observed. The band range from 140 to 200 nm with a peak at about 173 nm results from the host lattice absorption. For Sm3+-activated BGBO, the charge transfer...
Vacuum ultraviolet (VUV) spectroscopic properties of Sm3+, Tb3+ and Dy3+-activated MZr4(PO4)6 (M2+=Ca2+, Sr2+) phosphates, which have been prepared by solid-state reaction method, are presented. The strong absorption bands in the VUV range of undoped and rare-earth activated MZr4(PO4)6 were observed. The band range from 7.76–9.56eV is due to the host lattice absorption, and the band at 6.21–7.76eV...
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