Host-sensitized phosphorescence of Mn4+, Pr-3+,Pr-4+ and Nd3+ in MgAl2Si2O8


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Circir E., Kalaycioglu N.

MATERIALS RESEARCH BULLETIN, vol.47, no.5, pp.1138-1141, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 5
  • Publication Date: 2012
  • Doi Number: 10.1016/j.materresbull.2012.02.009
  • Journal Name: MATERIALS RESEARCH BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1138-1141
  • Keywords: Mn4+, Pr-3+,Pr-4+, Nd3+, MgAl2Si2O8 phosphors, Aluminosilicates, FLUORESCENCE, EU2+, LUMINESCENCE, SR, PHASES
  • Erciyes University Affiliated: Yes

Abstract

Mn4+ doped and Pr-3+,Pr-4+, Nd3+ co-doped MgAl2Si2O8-based phosphors were first of all synthesized about 1300 degrees C. They were characterized by thermogravimetry (TG), differential thermal analysis (DTA), X-ray powder diffraction (XRD), photoluminescence (PL) and scanning electron microscopy (SEM). The luminescence mechanism of the phosphors, which showed broad red emission bands in the range of 610-715 nm and had a different maximum intensity when activated by UV illumination, was discussed. Such a red emission can be attributed to the intrinsic d-d transitions of Mn4+. (C) 2012 Elsevier Ltd. All rights reserved.