Host-sensitized phosphorescence of Mn4+, Eu3+, and Yb3+ in MgAl2Si2O8

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Circir E., Kalaycioglu N.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, cilt.110, sa.3, ss.1179-1183, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 110 Sayı: 3
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1007/s10973-011-2118-0
  • Dergi Adı: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1179-1183
  • Anahtar Kelimeler: Mn4+, Eu3+, Yb3+, MgAl2Si2O8 phosphors, Aluminosilicates, FLUORESCENCE, EU2+, LUMINESCENCE, SR, PHASES
  • Erciyes Üniversitesi Adresli: Evet

Özet

Mn4+ doped and Eu3+, Yb3+ co-doped MgAl2Si2O8-based phosphors were prepared by conventional solid state reaction 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 a different maximum intensity when activated by UV illumination, was discussed. Such a red emission can be attributed to the intrinsic (2) E -> (4) A (2) transitions of Mn4+.