Two-Dimensional SiO2/VO2 Photonic Crystals with Statically Visible and Dynamically Infrared Modulated for Smart Window Deployment

Yujie Ke, Igal Balin, Ning Wang, Qi Lu, Alfred Iing Yoong Tok, Timothy J. White, Shlomo Magdassi, Ibrahim Abdulhalim, Yi Long

Research output: Contribution to journalArticlepeer-review

151 Scopus citations

Abstract

Two-dimensional (2D) photonic structures, widely used for generating photonic band gaps (PBG) in a variety of materials, are for the first time integrated with the temperature-dependent phase change of vanadium dioxide (VO2). VO2 possesses thermochromic properties, whose potential remains unrealized due to an undesirable yellow-brown color. Here, a SiO2/VO2 core/shell 2D photonic crystal is demonstrated to exhibit static visible light tunability and dynamic near-infrared (NIR) modulation. Three-dimensional (3D) finite difference time domain (FDTD) simulations predict that the transmittance can be tuned across the visible spectrum, while maintaining good solar regulation efficiency (ΔTsol = 11.0%) and high solar transmittance (Tlum = 49.6%). Experiments show that the color changes of VO2 films are accompanied by NIR modulation. This work presents a novel way to manipulate VO2 photonic structures to modulate light transmission as a function of wavelength at different temperatures.

Original languageEnglish
Pages (from-to)33112-33120
Number of pages9
JournalACS applied materials & interfaces
Volume8
Issue number48
DOIs
StatePublished - 7 Dec 2016

Keywords

  • 2D nanostructure
  • FDTD
  • color change
  • photonic crystal
  • thermochromic
  • vanadium dioxide

ASJC Scopus subject areas

  • General Materials Science

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