Influence of Thermal Annealings in Argon on the Structural and Thermochromic Properties of MoO 3 Thin Films

M. A. Arvizu, M. Morales-Luna, M. Pérez-González, E. Campos-Gonzalez, O. Zelaya-Angel, S. A. Tomás

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The effect of thermal annealing in an inert atmosphere (argon) on the structural and thermochromic properties of MoO 3 thin films was investigated. MoO 3 thin films were deposited by thermal evaporation in vacuum of MoO 3 powders. X-ray diffraction patterns of the films showed the presence of the monoclinic Magneli phase Mo 9O 26 for annealing temperatures above 250∘C. Absorbance spectra of the films annealed in argon indicated that their thermochromic response increases with the annealing temperature in the analyzed range (23 C –300 C), a result opposite to the case of thermal annealings in air, for which case the thermochromic response shows a maximum value around 200 C–225 C and decreases for higher temperatures. These results are explained in terms of a higher density of oxygen vacancies formed upon thermal treatments in inert atmospheres.

Original languageEnglish
Article number51
JournalInternational Journal of Thermophysics
Volume38
Issue number4
DOIs
Publication statusPublished - 1 Apr 2017
Externally publishedYes

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argon
annealing
inert atmosphere
thin films
diffraction patterns
evaporation
vacuum
temperature
air
oxygen
x rays

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Arvizu, M. A. ; Morales-Luna, M. ; Pérez-González, M. ; Campos-Gonzalez, E. ; Zelaya-Angel, O. ; Tomás, S. A. / Influence of Thermal Annealings in Argon on the Structural and Thermochromic Properties of MoO 3 Thin Films. In: International Journal of Thermophysics. 2017 ; Vol. 38, No. 4.
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Influence of Thermal Annealings in Argon on the Structural and Thermochromic Properties of MoO 3 Thin Films. / Arvizu, M. A.; Morales-Luna, M.; Pérez-González, M.; Campos-Gonzalez, E.; Zelaya-Angel, O.; Tomás, S. A.

In: International Journal of Thermophysics, Vol. 38, No. 4, 51, 01.04.2017.

Research output: Contribution to journalArticle

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