Comparison of MgAl2Si2O8:Mn4+ Systems Doped with Co-Activator Ions in Terms of Long Lifetime for Optoelectronic Applications


Ozturk E., Kalaycioglu N.

IEEE International Conference on Oxide Materials for Electronic Engineering - Fabrication, Properties and Applications (OMEE), Lviv, Ukraine, 26 - 30 May 2014, pp.159-160 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Lviv
  • Country: Ukraine
  • Page Numbers: pp.159-160

Abstract

Mn-4 doped and Pr-3+,Pr-4, Sm-3, Gd-3, Tb-3+,Tb-4, Ho3+, Er3+, Tm-3 and Yb3+ co-doped MgAl2Si2O8-based phosphors were prepared by conventional solid state synthesis at 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 600-715 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 Mn-4.