Macroscopic and microscopic investigations of the effect of gas exposure on nanocrystalline SnO2 at elevated temperature
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Electron beam irradiation-induced reduction of Sn on epitaxial rutile Sn<inf>x</inf>Ti<inf>1-x</inf>O<inf>2</inf> alloy thin films
2011, Thin Solid FilmsCitation Excerpt :Therefore, this SnO2–TiO2 system has been well examined in bulk ceramics. On the other hand, their single crystal surfaces have been intensively studied as a model system to get a general understanding of catalytic properties on oxide surfaces [4–8], while the SnO2–TiO2 alloy surface has not been yet. It is because each pure single crystal is commercially available, but not is the single crystal alloy of SnO2–TiO2.
XPS study on the correlation between chemical state and oxygen-sensing properties of an iron oxide thin film
2007, Applied Surface ScienceCitation Excerpt :In order to understand the sensing mechanism in detail, one should find the relation between the chemical changes on the surface and the electrical response, typically resistance change. X-ray photoelectron spectroscopy (XPS) is a widely used tool for the chemical analysis of surfaces and it has been applied in some extent also to gas sensor studies [2–9]. Maffeïs et al. [4] studied a nanocrystalline SnO2 gas sensor with XPS and reported on the band bending caused by gas exposure; they also correlated the band bending with changes in bulk resistance [5].
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2009, Journal of Nanoscience and Nanotechnology