caa a22 4500 463212061 CHVBK 20180405153144.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s00339-007-3936-6 doi (NATIONALLICENCE)springer-10.1007/s00339-007-3936-6 Photoluminescent properties of Eu 3 +(Dy 3 +)-activated YNb x Ta 1 - x O 4 and REVTa 2 O 9 (RE = Y, La, Gd) phosphors from the hybrid precursors [Elektronische Daten] [X. Xiao, B. Yan] In the context, Eu3+ (Dy3+)-doped YNbxTa1-xO4 and REVTa2O9 (RE=Y, La, Gd) phosphors have been synthesized from the hybrid precursors. Both XRD and SEM indicated the particles present good crystalline state, whose crystalline grain sizes were in the range of 0.5 to 1μm. Besides, XRD patterns of YNbxTa1-xO4 (x=0.1, 0.2, 0.3, 0.5, 0.9) have shown that the phase has been changed from M′-type YTaO4 to M-type YNbO4 with increasing niobium content. Furthermore, from the luminescent spectra of Eu3+-doped YNbxTa1-xO4, it was observed that the 5 D 0-7 F 2 transition of Eu3+ was predominated and its intensity increases with increasing niobium content, as well as the intensity ratio of 5 D 0-7 F 2 transition to 5 D 0-7 F 1 transition for Eu3+. The optimum concentrations of Eu3+ and Dy3+ in YNb0.5Ta0.5O4 have been found to be 6 and 5mol %, respectively. At the same time, the luminescent properties of Eu3+ and Dy3+ in REVTa2O9 (RE=Y, La, Gd) have also been investigated that GdVTa2O9:Eu3+ (Dy3+) presents high luminescence, while LaVTa2O9:Eu3+ (Dy3+) shows weak luminescence. Springer-Verlag, 2007 Xiao X. Department of Chemistry, Tongji University, 200092, Shanghai, P.R. China aut Yan B. Department of Chemistry, Tongji University, 200092, Shanghai, P.R. China aut Applied Physics A Springer-Verlag 88/2(2007-08-01), 333-339 0947-8396 88:2<333 2007 88 339 https://doi.org/10.1007/s00339-007-3936-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-3936-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xiao X. Department of Chemistry, Tongji University, 200092, Shanghai, P.R. China aut NATIONALLICENCE 700 1- Yan B. Department of Chemistry, Tongji University, 200092, Shanghai, P.R. China aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 88/2(2007-08-01), 333-339 0947-8396 88:2<333 2007 88 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer