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Crystallinity Effects in the Optical Modulation of Electrochromic Devices

Published online by Cambridge University Press:  15 February 2011

J. D. Klein  and
S. L. Clauson
J. D. Klein
Affiliation:
EIC Laboratories, Inc., Norwood, MA 02062, jdkamerica@aol.com
S. L. Clauson
Affiliation:
EIC Laboratories, Inc., Norwood, MA 02062, jdkamerica@aol.com
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Abstract

The electrochromic switching behavior of amorphous and crystalline WO3 thin films was investigated. The films were deposited on ITO-coated Corning 7059 glass substrates by sputtering. X-ray diffraction showed the crystalline film to have a mixed monoclinic/orthorhombic crystal structure. The coloration mechanisms in the visible and very near infrared were investigated by hydrogen insertion. A numerical fitting scheme allowed the coloration of the films to be expressed by means of the extinction index. As expected, crystalline WO3 exhibited more modulation in the very near infrared. A reversible crystallographic distortion was associated with the coloration of the crystalline WO3 films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 403: Symposium I – Polycrystalline Thin Films: Structure, Texture, Properties and Applications II , 1995 , 521
Copyright
Copyright © Materials Research Society 1996

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References

1. Schirmer, O.F., Wittwer, V., Baur, G., and Brandt, G., J. Electrochem. Soc. 124, 749 (1977).Google Scholar
2. Svensson, J.S.E.M. and Granqvist, C.G., Appl. Phys. Lett. 45, 828 (1984).Google Scholar
3. Goldner, R.B., Mendelsohn, D.H., Alexander, J., Henderson, W.R., Fitzpatrick, D., Haas, T.E., Sample, H.H., Rauh, R.D., Parker, M.A., and Rose, T.L., Appl. Phys.Lett. 43, 1093 (1983).Google Scholar
4. Arntz, F.O., Goldner, R.B., Morel, B., Hass, T.E., and Wong, K.K., J. Appl. Phys. 67, 3177 (1990).Google Scholar
5. Goldner, R.B., Seward, G., Wong, K., Berera, G., Haas, T., and Norton, P., Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VI, edited by Lampert, C.M. (Proc. SPIE 823, Bellingham, WA 1987) pp. 101–105 .Google Scholar
6. Klein, J.D. and Yen, A. in Solid State Ionics III, edited by Nazri, G-A., Tarascon, J-M., and Armand, M. (Mater. Res. Soc. Proc. 293, Pittsburgh, PA 1995) pp. 389–394. Google Scholar
7. Gavrilyuk, A.I., Prokhavtilov, V.G., and Chudnovskii, F.A., Zh. Tverd. Tela 24, 982–992 (1982) [Soviet Phys. Solid State 24, 558–563 (1982)].Google Scholar
8. Klein, J.D., Yen, A., and Cogan, S.F., J. Appl. Phys. 68, 1825 (1990).Google Scholar
9. Salje, E., Acta Cryst. B 33, 574 (1977).Google Scholar