論文

筆頭著者 責任著者
2022年3月

Absorptivity Control Over the Visible to Mid-Infrared Range Using a Multilayered Film Consisting of Thermochromic Vanadium Dioxide

International Journal of Thermophysics
  • Kazuma Isobe
  • ,
  • Minoru Tomioka
  • ,
  • Yutaka Yamada
  • ,
  • Akihiko Horibe

43
3
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/s10765-021-02944-4
出版者・発行元
Springer Science and Business Media LLC

Vanadium dioxide (VO2) is a phase transition material that exhibits metallic or insulating characteristics depending upon its temperature. In this study, a multilayered film consisting of VO2, silicon dioxide (SiO2) and gold was proposed as a metamaterial that switches its absorptivity over a broad wavelength range depending on the ambient temperature as a fundamental element of a building pigment. At high temperatures, the multilayer showed a high absorptivity at mid-infrared wavelengths, promoting radiative cooling. Simultaneously, the multilayer presented a low absorptivity in the visible and near-infrared wavelengths, enhancing sunlight absorption. The daily average heat flux can possibly be suppressed in summer in comparison with a gray body whose emissivity was 0.8. Conversely, at a lower temperatures, the multilayer showed opposite absorptivity in both the mid-infrared and visible ranges, and its daily average heat flux increased in winter. The metal–insulator phase transition of VO2 caused a drastic shift of the resonant wavelength related to surface phonons and surface plasmons at an infrared wavelength, and optical interference at a visible wavelength, originating at the interface of the SiO2 layer. Thus, the radiative heat flux for both sunlight absorption and radiative cooling was simultaneously controlled depending on the temperature of VO2.

リンク情報
DOI
https://doi.org/10.1007/s10765-021-02944-4
URL
https://link.springer.com/content/pdf/10.1007/s10765-021-02944-4.pdf
URL
https://link.springer.com/article/10.1007/s10765-021-02944-4/fulltext.html
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85122421977&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85122421977&origin=inward
ID情報
  • DOI : 10.1007/s10765-021-02944-4
  • ISSN : 0195-928X
  • eISSN : 1572-9567
  • ORCIDのPut Code : 106054917
  • SCOPUS ID : 85122421977

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