MgAl2Si2O8:Mn4+ Systems Doped with Co-Activator for Optoelectronic Applications

Esra Öztürk; Nilgun Ozpozan Kalaycioglu

doi:10.4028/www.scientific.net/SSP.230.217

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HomeSolid State PhenomenaSolid State Phenomena Vol. 230MgAl2Si2O8:Mn4+ Systems Doped with Co-Activator...

MgAl₂Si₂O₈:Mn⁴⁺ Systems Doped with Co-Activator for Optoelectronic Applications

Abstract:

Mn⁴⁺doped and Pr^3+,4+, Sm³⁺, Gd³⁺, Tb^3+,4+, Ho³⁺, Er³⁺, Tm³⁺ and Yb³⁺ co-doped MgAl₂Si₂O₈-based phosphors were prepared by conventional solid state synthesis at 1300 °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 ²E→⁴A₂ transitions of Mn⁴⁺.

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Periodical:

Solid State Phenomena (Volume 230)

Pages:

217-220

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.230.217

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Online since:

June 2015

Authors:

Esra Öztürk*, Nilgun Ozpozan Kalaycioglu

Keywords:

Luminescence, Magnesium Aluminasilicate

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