Remark on the optical gap in ZnO-Bi2O3-TeO2 glasses |
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| Authors: | J Ozdanova L Tichy |
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| Institution: | a Faculty of Chemical Technology, University of Pardubice, 532 10 Pardubice, Czech Republic
b Joint Laboratory of Solid State Chemistry of Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic and University of Pardubice, 532 10 Pardubice, Czech Republic |
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| Abstract: | Four ZnO-Bi2O3-TeO2 glasses were prepared from high purity (4N5) oxides. From measurements of the optical transmission on very thin bulk samples the optical gap was determined at around 3.55 eV for the glasses studied. The temperature dependence of the optical gap was also determined from the room temperature close up to 500 K. Preliminary Raman scattering measurements indicate that with a decrease in TeO2 content, TeO4 trigonal bipyramid transformation proceeds into TeO3 trigonal pyramids. |
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| Keywords: | 81 05 &minus Kf 78 20 &minus Ci 78 30 &minus Ly |
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