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Applied Optics

Applied Optics


  • Vol. 30, Iss. 7 — Mar. 1, 1991
  • pp: 847–851

Evolution of thermochromism during oxidation of evaporated vanadium films

S.-J. Jiang, C.-B. Ye, M. S. R. Khan, and Claes-Goran Granqvist  »View Author Affiliations

Applied Optics, Vol. 30, Issue 7, pp. 847-851 (1991)

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Thin vanadium oxide films were made by vacuum evaporation followed by the annealing posttreatment in the presence of air. The thickness increased by a factor as large as ~2.3 on oxidation. Electron diffractograms indicated a bcc → monoclinic transformation during the annealing, and electron micrographs showed pronounced grain growth. Temperature-dependent electrical conductivity as well as spectral transmittance was measured vs annealing time. At an initial thickness of 0.12 μm, it took a few hours to establish VO2 films with a well defined semiconductor–metal transition and concomitant thermochromic switching at ~57°C.

© 1991 Optical Society of America

Original Manuscript: March 6, 1990
Published: March 1, 1991

S.-J. Jiang, C.-B. Ye, M. S. R. Khan, and Claes-Goran Granqvist, "Evolution of thermochromism during oxidation of evaporated vanadium films," Appl. Opt. 30, 847-851 (1991)

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