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Processing and characterization of new oxysulfide glasses in the Ge-Ga-As-S-O system |
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| Authors: | C Maurel L Petit M Dussauze M Couzi AC Miller K Richardson |
| Institution: | a School of Materials Science and Engineering, Clemson University, COMSET, 161 Sirrine Hall, Box 340971, Clemson, SC 29634, USA b Institut de Chimie de la Matière Condensée de Bordeaux, CNRS-Université Bordeaux 1, 87 Av. Dr. Schweitzer, 33608 Pessac, France c Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vass. 116 35 Athens, Greece d Institut des Sciences Moléculaires, UMR 5255 CNRS, Université Bordeaux 1, 351 Cours de la Libération, 33405 Talence, France e Center for Optical Technologies and Department of Materials Science and Engineering, Lehigh University, 5E Packer Avenue, Bethlehem, PA 18015, USA |
| Abstract: | New oxysulfide glasses have been prepared in the Ge-Ga-As system employing a two-step melting process which involves the processing of the chalcogenide glass (ChG) and its subsequent melting with amorphous GeO2 powder. Optical characterization of the synthesized oxysulfide glasses has shown that the cut-off wavelength decreases with increasing oxygen content, and this has been correlated to results of Raman and infrared (IR) spectroscopies which show the formation of new oxysulfide structural units. X-ray photoelectron spectroscopy (XPS) analysis to probe the bonding environment of oxygen atoms in the oxysulfide glass network, has revealed the preferred formation of Ga-O and Ge-O bonds in comparison to As-O bonds. This work has demonstrated that melting a ChG glass with GeO2 leads to the formation of new oxysulfide glassy materials. |
| Keywords: | Oxysulfide Raman and IR spectroscopies XPS |
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