Effect of the substitution of S for Se on the structure of the glasses in the system Ge0.23Sb0.07S0.70-xSex

    Authors

    L. Petit; N. Carlie; K. Richardson; Y. Guo; A. Schulte; B. Campbell; B. Ferreira;S. Martin

    Comments

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    Abbreviated Journal Title

    J. Phys. Chem. Solids

    Keywords

    RAMAN-SPECTRA; AMORPHOUS-SEMICONDUCTORS; CHALCOGENIDE GLASSES; REGION; Chemistry, Multidisciplinary; Physics, Condensed Matter

    Abstract

    Glasses in the system Ge-Sb-S/Se, expected to have high nonlinear index, have been elaborated with different S/Se ratio in order to increase the nonlinear optical properties of these glasses. We report results of a systematic study examining the relationship of the physical properties to the structure of the glasses in the system Ge0.23Sb0.07S0.70-xSex with x = 0, 0.05, 0.10, 0.20, 0.50 and 0.70 where the substitution of S for Se has been made. The decrease of the glass transition temperature and the increase of the density with the progressive substitution of S for Se have been correlated, in accordance with the red shift of the absorption band gap, to the progressive decrease of corner-sharing GeS4/2 units for 0.05 < x < 0.50 and of the progressive increase of corner-sharing GeSe4/2 units and Ge-Se-Ge when x > 0.50. (c) 2005 Elsevier Ltd. All rights reserved.

    Journal Title

    Journal of Physics and Chemistry of Solids

    Volume

    66

    Issue/Number

    10

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    1788

    Last Page

    1794

    WOS Identifier

    WOS:000234337700032

    ISSN

    0022-3697

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