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Title of article :
Compositional dependence of Se2− color center formation in silicate glasses
Author/Authors :
Choi، نويسنده , , Jeon Han Park، نويسنده , , Bong Je and Choi، نويسنده , , Yong Gyu and Heo، نويسنده , , Jong and Chung، نويسنده , , Woon Jin، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
Pages :
From page :
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Abstract :
We experimentally verified, within silicate glasses, the formation of Se2− color centers that are responsible for a broad visible emission under optical excitation at UV wavelengths. In addition to Raman spectra, all the spectroscopic analyses on absorption, photoluminescence, and photoluminescence excitation unanimously confirm the formation of Se2− color centers. However, the visible absorption due to Se2− color centers disppeared upon increasing concentration of Na2O, which implies that their formation would depend on the compositions of silicate glasses. The role of Na2O in the formation mechanism in relation to glass structure is then discussed in terms of various analyses on X-ray diffraction patterns, X-ray photoelectron spectroscopy, and Raman spectroscopy.
Keywords :
Color centers , silicate , Luminescence , Glasses , SE
Journal title :
Journal of Non-Crystalline Solids
Journal title :
Journal of Non-Crystalline Solids
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Link To Document :