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 SM ISO690:2012IOVU, Mihail, CIORBĂ, Valeriu, COLOMEICO, Eduard, IOVU, Maria, NASTASE, A., PRISACARI, A., POPESCU, Mihai A., SPOTIUC, Oleg. Optical photoinduced phenomena and holographic recording in amorphous As-Se thin films. In: Journal of Optoelectronics and Advanced Materials, 2005, vol. 7, pp. 2333-2339. ISSN 1454-4164. |
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  Journal of Optoelectronics and Advanced Materials |
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| Volumul 7 / 2005 / ISSN 1454-4164 | |
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| Pag. 2333-2339 | |
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The effect of light-induced photodarkening in amorphous As 100-xSex (x=40÷98) thin films for different thickness and film composition was investigated. It was established a strong dependence of the red shift of the absorption edge and refractive index under light irradiation on the film composition and thermal treatment. It was established that the more sensitive films to photodarkening and holographic recording correspond to non-stoichiometric compositions of As 55Se45 and As60Se40 glasses. The experimental results are interpreted in terms of structural optical polymerization process, which includes the transformation of As 4Se4 and Se2 structural units in homogenius AsSe3/2 network. |
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| Cuvinte-cheie amorphous chalcogenide films, holography, Optical absorbtion and photoinduced phenomena |
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