Tetrahedral substitution to induce tunable luminescent properties in apatite structural solid-solution phosphors Ca9La(PO4)5[(Si, Ge)O4]F2:Ce3+. (October 2017)

• Record Type: Journal Article
• Authors: Liu, Haikun; Zhang, Yuanyuan; Mei, Lefu; Guo, Qingfeng; Li, Haoshuo; Liao, Libing
• Is Part Of: Dyes and pigments. Volume 145(2017)
• Page Start: 514
• Page End: 517
• Publication Date: 2017-10
• Subjects: Solid solution -- Phosphor -- Apatite structure -- Spectral tuning -- Luminescence; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2017.06.045
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: A series of solid solution phosphors Ca9 La(PO4 )5 [(Si1- x Ge x )O4 ]F2 :Ce 3+ with apatite structure in the P 63 / m space group have been prepared. The novel solid solution phosphors show continuously controlled violet-blue emission. It is found that both substantial spectra broadening (45 → 100 nm) and red-shift (404 → 422 nm) can be realized with the continuous introduction of [GeO4 ] 4- into the crystal lattice which has been simulated by a crystal-field model. The above results indicate that the tetrahedral substitution is interesting to induce spectral tuning properties based on the chemical composition control of the iso-structural solid solutions. Highlights: The solid solution phosphors Ca9 La(PO4 )5 [(Si1-x Gex )O4 ]F2 :Ce 3+ have been prepared. A red-shift phenomenon occurs with the introduction of [GeO4 ] 4- into the solid solution phosphors. An insight to design color-tunable phosphors based on the tetrahedral substitution.