A barrier-cluster model of chalegonide glasses is employed to analyse optical transitions near the absorption edge. The influence of temperature on the optical absorption edge is studied. The model is used to explain temperature shift of exponential tails of the optical absorption and the temperature dependence of the optical forbidden-band width at low temperatures.
Origin
Slovak Univeristy Of Technology, Bratislava, Slovakia.
Journal Title
Advanced Materials Research Vols 39-40 (2008) 253-256
Sector
Special Glass
Class
S 3408