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Characteristics of SnSe and SnSe2 thin films grown onto polycrystalline SnO2-coated glass substrates

✍ Scribed by Guillén, C. ;Montero, J. ;Herrero, J.

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
464 KB
Volume
208
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

Tin selenide thin films have been prepared by selenization of sputtered tin layers and have been analyzed comparatively onto bare and SnO~2~‐coated glass substrates. In particular, the effects of the selenization temperature and the polycrystalline substrate nature on the stoichiometry and physical properties of the layers were investigated. X‐ray diffraction was used to determine the crystalline phases and their structure, scanning electron microscopy to observe the surface topography, energy‐dispersive X‐ray analysis to establish the film composition, and spectrophotometry to determine the optical absorption, all these properties correlated to the experimental parameters. By using polycrystalline tin oxide coatings it is possible to achieve a significant crystalline enhancement for the SnSe and SnSe~2~ phases identified, being the Se:Sn atomic proportion, as well as the optical absorption, highly dependent on the selenization temperature apart from the substrate nature.

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