Novel red-emitting phosphors, (Mg(1-x-y)MnxDyy)Al2Si2O8 and (Mg(1-x-y)MnxTmy)Al2Si2O8


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Ozturk E., Ozpozan N. , DAYAN S.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, cilt.117, ss.573-578, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 117 Konu: 2
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1007/s10973-014-3791-6
  • Dergi Adı: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Sayfa Sayıları: ss.573-578

Özet

Mn4+ doped and Dy3+, Tm3+ 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 E-2 -> (4)A(2) transitions of Mn4+.