Oxidation of SnO to SnO{sub 2} thin films in boiling water at atmospheric pressure

We demonstrated that SnO is oxidized to SnO{sub 2} in boiling water. (001)-oriented SnO thin films were pulsed-laser deposited onto a glass substrate. The Sn valence number changed from (II) to (IV) by keeping SnO films in boiling water at atmospheric pressure for 5 h. Optical transparency of the ob...

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Bibliographic Details
Published in:Applied physics letters 2014-03, Vol.104 (9)
Main Authors: Nose, K., Suzuki, A. Y., Oda, N., Kamiko, M., Mitsuda, Y.
Format: Article
Language:English
Subjects:
ABSORPTION SPECTROSCOPY
AMORPHOUS STATE
ATOMIC FORCE MICROSCOPY
BOILING
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DIELECTRIC PROPERTIES
DIFFUSION
FOURIER TRANSFORMATION
GLASS
LASER RADIATION
OPACITY
OXIDATION
SUBSTRATES
THIN FILMS
TIN OXIDES
VALENCE
VISIBLE RADIATION
WATER
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Summary:We demonstrated that SnO is oxidized to SnO{sub 2} in boiling water. (001)-oriented SnO thin films were pulsed-laser deposited onto a glass substrate. The Sn valence number changed from (II) to (IV) by keeping SnO films in boiling water at atmospheric pressure for 5 h. Optical transparency of the obtained SnO{sub 2} films was greater than 95% in the visible light range. The SnO{sub 2} films possessed an amorphous structure, and exhibited dielectric properties. Atomic force microscopy and Fourier transform infrared spectroscopy revealed granular structures and the existence of –OH groups, which may account for the diffusion of oxidants within the film.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4867654