Luminescence investigations on LiAl5O8:Tb 3+ nanocrystalline phosphors

Shreyas S. Pitale, Vinay Kumar, Indrajit Nagpure, O. M. Ntwaeaborwa, H. C. Swart

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


Tb3+-doped porous LiAl5O8 nanophosphors were successfully synthesized using a single step combustion method. Structural characterization of the luminescent material was carried out with X-ray diffraction (XRD) analysis and high resolution transmission electron microscopy (HRTEM). Surface composition was estimated from X-ray photoelectron and Auger spectroscopic techniques. The average particle size was estimated as 37 ± 3 nm. Luminescence properties were studied by the photoluminescence spectroscopy. The phosphor showed intense luminescence in the green region due to the magnetic dipole transition of 5D47F5 of the Tb3+ ion at 543 nm under 241 nm excitation. The intense 4f-4f transitions of Tb3+ outshine the luminescence from host which would otherwise deteriorate the color quality of the display device under operation.

Original languageEnglish
Pages (from-to)341-345
Number of pages5
JournalCurrent Applied Physics
Issue number3
Publication statusPublished - May 2011
Externally publishedYes


  • LiAlO
  • Nanophosphors
  • Photoluminescence
  • Rare earth ions
  • Spinel

ASJC Scopus subject areas

  • General Materials Science
  • General Physics and Astronomy


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