Spectral tuning and energy transfer in a potential fluorescent lamp phosphor BaMg 2Al 6Si 9O 30:Eu 2

Wei Lü, Yongshi Luo, Zhendong Hao, Xia Zhang, Xiaojun Wang, Jiahua Zhang

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

BaMg 2Al 6Si 9O 30:Eu 2 phosphors are synthesized by the solid-state reaction method and their photoluminescence (PL) properties are investigated. The ultraviolet emission originates from Eu 2(I) substituting for Ba 2 sites, whereas the blue emission is attributed to Eu 2(II) substituting for Mg 2 sites. With increasing Eu 2 doping concentrations, the blue emission band shifts to long wavelength and the PL intensity ratio of blue to ultraviolet emission increases. Energy transfer between the two different Eu 2 ions is analyzed by photoluminescence excitation and emission spectra, and lifetimes. Results indicate that the emission spectra can be tuned by changing Eu 2 contents. We have also demonstrated that BaMg 2Al 6Si 9O 30:Eu 2 phosphor is a kind of potential phosphor for fluorescent lamps.

Original languageEnglish
Pages (from-to)2439-2442
Number of pages4
JournalJournal of Luminescence
Volume132
Issue number9
DOIs
StatePublished - Sep 2012

Scopus Subject Areas

  • Biophysics
  • Atomic and Molecular Physics, and Optics
  • General Chemistry
  • Biochemistry
  • Condensed Matter Physics

Keywords

  • Energy transfer
  • Fluorescent lamp
  • Phosphor

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