Cerium and terbium ions doped strontium aluminosilicate polycrystalline phosphors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)85-91
Journal / PublicationJournal of Luminescence
Volume187
Publication statusPublished - 1 Jul 2017

Abstract

Cerium and terbium ions doped strontium aluminosilicate polycrystalline phosphors with monoclinic structure identified to I2/c space group were synthesized by the high temperature solid-state reaction. Differential NUV-blue fluorescence behaviors of Ce3+ were exhibited under UVB radiation, which were originated from the luminescence centers with different crystal field environment. Bright green fluorescence of Tb3+ was released under UVA radiation, and with the intervention of Ce3+ ions, the effective excitation spectral range of Tb3+ ions was extended from UVA to UVB due to the energy transfer from Ce3+ to Tb3+. Upon the excitation in extended region, the luminescence intensity of Tb3+ was remarkably strengthened by a maximum fluorescence sensitization factor of ~152. These results demonstrate that Ce3+ and Tb3+ doped SrAl2Si2O8 polycrystals are valuable NUV-blue and green phosphors, which have potential applications for phototherapy and color display.

Research Area(s)

  • Ce3+/Tb3+ doping, Energy transfer, Fluorescence sensitization, SrAl2Si2O8

Citation Format(s)

Cerium and terbium ions doped strontium aluminosilicate polycrystalline phosphors. / Zhang, Yuhang; Li, Desheng; Pun, Edwin Yue Bun et al.

In: Journal of Luminescence, Vol. 187, 01.07.2017, p. 85-91.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review