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Irreversible photobleaching, photorefraction and photoexpansion in GeS2 amorphous film
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SYSNO ASEP 0341644 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Irreversible photobleaching, photorefraction and photoexpansion in GeS2 amorphous film Author(s) Knotek, P. (CZ)
Tichý, Ladislav (UMCH-V) RID
Arsova, D. (BG)
Ivanova, Z.G. (BG)
Tichá, H. (CZ)Number of authors 5 Source Title Materials Chemistry and Physics. - : Elsevier - ISSN 0254-0584
Roč. 119, 1-2 (2010), s. 315-318Number of pages 4 s. Language eng - English Country CN - China Keywords amorphous chalcogenide films ; irradiation effects ; optical band gap Subject RIV CA - Inorganic Chemistry CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000272308600053 DOI 10.1016/j.matchemphys.2009.09.003 Annotation The photoinduced irreversible effects in amorphous GeS2 film were investigated. The magnitude of the photobleaching was found at around = 13% and it was discussed within the Davis-Mott model and within Taucś model for optical transitions in amorphous solids. Based on the optical measuremets and the Atomic Force Microscopy we also observed photoexpansion at around = 4.8% accompanied by a decrease in the refractive index from n = 2.02 for the virgin film to n = 1.94 for a film illuminated until a nearly steady state. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2011
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