Abstract
The transient photoinduced optical absorption change (TOC) and the photodarkening have been studied in Ag photodoped As2S3 glass films. They were observed in all of the sample films which we prepared ((As0.4S0.6)100-XAgX: 0≦X≦24.4at.%). For the photodarkening, the degree of the change in optical-gap energy due to the light irradiation and the heat treatment decreases with the increasing of Ag content. This may be ascribed to the fact that the motion of S atoms is hindred by the Ag atoms, causing a decrease in spatial flexibility. For the TOC, the spectral distribution of the optical absorption change has a broad peak. The peak center shifts to a lower energy position with the increasing of Ag content.
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