Mn4+-, Tb-3+,Tb-4+-, and Er3+-activated red phosphors in the MgAl2Si2O8 system


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Ozturk E. , Kalaycioglu N. O.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol.115, no.1, pp.573-577, 2014 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 115 Issue: 1
  • Publication Date: 2014
  • Doi Number: 10.1007/s10973-013-3277-y
  • Title of Journal : JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Page Numbers: pp.573-577

Abstract

Mn4+ doped and Tb-3+,Tb-4+, Er3+ co-doped MgAl2Si2O8-based phosphors were prepared by conventional solid-state synthesis at 1,300 A degrees C. They were characterized by thermogravimetry, differential thermal analysis, X-ray powder diffraction, photoluminescence, and scanning electron microscopy. The luminescence mechanism of the phosphors, which showed broad red emission bands in the range of 600-715 nm and had different maximum intensities when activated by UV illumination, was discussed. Such a red emission can be attributed to the intrinsic E-2 -> (4)A(2) transitions of Mn4+.