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Photoinduced Effects in Amorphous Chalcogenides

M. Frumar, Z. Polák, Z. Černošek, B. Frumarová, and T. Wágner

Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, CZ-532 10 Pardubice


Abstract: Exposure of many amorphous chalcogenides can change their structure, reactivity, and optical and oth°r properties. New results of the study of photoinduced effects are presented and reviewed. Both reversible and irreversible photoinduced effects and changes of short-range order have been studied by Raman and IR spectroscopy in As—S layers. The effects of photodoping, chemical modification, photoinduced surface deposition, optically induced changes of reactivity and their dependence on the structure as well as mechanisms of optically induced effects are discussed. Attention is also paid to photoinduced effects in different materials. The photoinduced changes of structure and properties can be applied in high-resolution litography, for optical storage, in production of photoresists, optical diffraction elements, planar optoelectronic parts and circuits. Some of these applications are also mentioned.


Chemical Papers 51 (6A) 310–327 (1997)

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