Effect of the substitution of S for Se on the structure of the glasses in the system Ge0.23Sb0.07S0.70-xSex
Abbreviated Journal Title
J. Phys. Chem. Solids
RAMAN-SPECTRA; AMORPHOUS-SEMICONDUCTORS; CHALCOGENIDE GLASSES; REGION; Chemistry, Multidisciplinary; Physics, Condensed Matter
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 of Physics and Chemistry of Solids
"Effect of the substitution of S for Se on the structure of the glasses in the system Ge0.23Sb0.07S0.70-xSex" (2005). Faculty Bibliography 2000s. 5541.