Publication detail

Irreversible photobleaching, photorefraction and photoexpansion in GeS2 amorphous film.

Authors: Knotek Petr | Tichý Ladislav | Arsova D | Ivanova Zoja G | Tichá Helena

Year: 2010

Type of publication: článek v odborném periodiku

Name of source: Materials Chemistry and Physics

Publisher name: Elsevier Science SA

Place: Lausanne

Page from-to: 315-318

Titles:

Language	Name	Abstract	Keywords
cze	Nevratné světlání, změny indexu lomu a expanze vyvolané fotony v GeS2 amorfních filmech.	Fotoindukované nevratné změny v amorfních GeS2 filmech byly studovány. Intenzita světlání byla téměř 13% a byla diskutována v souladu s modely Davise-Motta a Tauce pro amorfní pevné látky. Na základě měření optických vlastností a AFM byla pozorována expanze 4,8% doprovázená poklesem indexu lomu	amorfní chalkogenidové filmy; osvěcování; energie optické hrany
eng	Irreversible photobleaching, photorefraction and photoexpansion in GeS2 amorphous film.	The photoinduced irreversible effect in amorphous GeS2 films were investigated. The magnitude of the photobleaching was found at around = 13% and it was discussed within the Davis-Mott model and within Tauc's model for optical transitions in amorphous solids. Based on the optical measurements 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.	amorphous chalcogenide films; irradiation effects; optical band gap

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