It is shown that the photostructural changes introduced during irradiation of chalcogenide glasses are dependent on the glass structure and composition. Photodarkening experiments performed on a series of As-S-Se glass suggest that the photostructural changes decrease as the network connectivity tends to an average co-ordination value of =2.4. Photorelaxation experiments performed on Ge-Se glasses show that contamination with oxygen does not appear to significantly affect photostructural changes.
Origin
University Of Arizona, Usa
Journal Title
Phys Chem Glasses 49 5 2008 278-280
Sector
Special Glass
Class
S 3509