Abstract
Illumination of amorphous As2S3 film by ultraviolet light with an overall light intensity on the sample surface of around 10Wcm−2 leads to extensive film oxidation. After 2min of illumination most of As2S3 film of an original thickness at around 0.425μm was converted into a cubic form of As2O3-arsenolite. A considerable amount of arsenolite microcrystals were found at a height of around 2μm and more which indicated a growth of As2O3 microcrystalline particles from the vapor phase.
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