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Characterization of WO3 Thin Films Grown on Silicon by HFMOD
Joint Authors
Zaca-Moran, Orlando
Galván-Arellano, Miguel
Díaz-Reyes, Joel
Castillo-Ojeda, Roberto
Source
Advances in Condensed Matter Physics
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-02
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
We studied the effect of annealing temperature on the physical properties of WO3 thin films using different experimental techniques.
WO3 has been prepared by hot-filament metal oxide deposition (HFMOD).
The films, chemical stoichiometry was determined by X-ray photoelectron spectroscopy (XPS).
The monoclinic single-phase nature of the as-deposited films, structure was changed to triclinic structure by annealing them at higher temperatures than 400°C, which has been determined by the X-ray diffraction analysis.
By Raman scattering is confirmed the change of crystalline phase, of monoclinic to triclinic, since that lattice vibrational modes of as-deposited WO3 and annealed at 500°C present clearly differences.
WO3 band gap energy can be varied from 2.92 to 3.15 eV by annealing WO3 from 0 to 500°C as was obtained by transmittance measurements.
The photoluminescence response of the as-deposited film presents three radiative transitions observed at 2.85, 2.41, and 2.04 eV that could be associated with oxygen vacancies; the first one is shifted to higher energies as the annealing temperature is increased due to the change of crystalline phase of the WO3.
American Psychological Association (APA)
Díaz-Reyes, Joel& Castillo-Ojeda, Roberto& Galván-Arellano, Miguel& Zaca-Moran, Orlando. 2013. Characterization of WO3 Thin Films Grown on Silicon by HFMOD. Advances in Condensed Matter Physics،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-483366
Modern Language Association (MLA)
Díaz-Reyes, Joel…[et al.]. Characterization of WO3 Thin Films Grown on Silicon by HFMOD. Advances in Condensed Matter Physics No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-483366
American Medical Association (AMA)
Díaz-Reyes, Joel& Castillo-Ojeda, Roberto& Galván-Arellano, Miguel& Zaca-Moran, Orlando. Characterization of WO3 Thin Films Grown on Silicon by HFMOD. Advances in Condensed Matter Physics. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-483366
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-483366