Red phosphors in MgAl2Si2O8 doping with Mn4+, Gd3+ and Lu3+ and host-sensitized luminescence properties


Kalaycioglu N. , Circir E.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol.111, no.1, pp.273-277, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 111 Issue: 1
  • Publication Date: 2013
  • Doi Number: 10.1007/s10973-012-2248-z
  • Title of Journal : JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Page Numbers: pp.273-277
  • Keywords: Luminescence, Mn4+, Gd3+, Lu3+, MgAl2Si2O8 phosphors, Aluminosilicates, FLUORESCENCE, EU2+, SR, PHASES, IONS

Abstract

Mn4+ doped and Gd3+, Lu3+ co-doped MgAl2Si2O8-based phosphors were first of all synthesized by solid state reaction at about 1300.0 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 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 E-2 -> (4)A(2) transitions of Mn4+.