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photo-crystalline-effects
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Evolution of roughness and photo-crystallization effect in ZnS-SiO 2 nanocomposite films
, Article Nanotechnology ; Volume 16, Issue 6 , 2005 , Pages 944-948 ; 09574484 (ISSN) ; Lee, H. Y ; Makino, H ; Yao, T ; Sharif University of Technology
2005
Abstract
Amorphous chalcogenides in the form of bulk or thin films are known as photosensitive materials that undergo changes in optical or structural properties upon irradiation. Here we study the optical properties of nanocomposite films of ZnS-SiO2 illuminated with ultraviolet (UV) light and relate them to the photo-induced evolution of roughness, as well as photo-crystallization effects in these films. We observe that upon UV irradiation a new crystalline phase of ZnSiO3 is formed in the nanocomposite film. This is accompanied by the evolution of surface roughness on the film. © 2005 IOP Publishing Ltd