Sol-gel synthesis, characterization and luminescence properties of SrMgAl2 SiO7:Eu2+ as a novel nanocrystalline phosphor

Luminescence. 2011 Nov-Dec;26(6):449-55. doi: 10.1002/bio.1251. Epub 2010 Oct 7.

Abstract

In this research, a new SrMgAl(2) SiO(7):Eu(2+) phosphor was synthesized via the sol-gel method. The phase-forming processes were studied by thermogravimetric-differential thermal analysis and X-ray diffraction technique. Scanning electron microscopy showed that there is uniform morphology and microstructure owing to the sol-gel route. Spectrophotometry and colorimetry analyses illustrated that, under short ultraviolet excitation, the main emission peak occurred at 421 nm and also a relatively pure blue color was observed that was ascribed to the 4f(6) 5d(1) ((2) D) → 4f(7) ((8) S(7/2)) transition of Eu(2+) with color coordination of x = 0.187, y = 0.077. Finally, it was found that the color and phase purity of the synthesized powder increased as calcinations time increased.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Colorimetry
  • Europium / chemistry*
  • Luminescent Measurements
  • Microscopy, Electron, Scanning
  • Nanoparticles*
  • Phosphorus / chemistry*
  • Powder Diffraction
  • Spectrometry, Fluorescence
  • Thermogravimetry

Substances

  • Phosphorus
  • Europium