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Photoinduced surface roughness variation in polycrystalline TiO2 thin films

Paper ID Volume ID Publish Year Pages File Format Full-Text
28615 44082 2006 5 PDF Available
Title
Photoinduced surface roughness variation in polycrystalline TiO2 thin films
Abstract

Photoinduced microstructural changes in transparent anatase thin films with large-grain polycrystallites (−200 nm) were evaluated using atomic force microscopy (AFM). Films were subjected to a vacuum ultraviolet (VUV) pretreatment before heating at 500 °C. Photoinduced wettability of the films was subsequently confirmed. Upon UV illumination, the surface image became blurred with an apparent increased surface roughness. The image sharpened gradually as the surface returned to its initial state. This microstructural surface change is most pronounced at grain boundaries.

Keywords
Surface morphology; Surface roughness; Titanium dioxide; Wetting
First Page Preview
Photoinduced surface roughness variation in polycrystalline TiO2 thin films
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 180, Issues 1–2, 15 May 2006, Pages 75–79
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering