Two-Dimensional SiO 2 /VO 2 Photonic Crystals with Statically Visible and Dynamically Infrared Modulated for Smart Window Deployment

作者：Yujie Ke, Igal Balin, Ning Wang, Qi Lu, Alfred Iing Yoong Tok, Timothy J. White, Shlomo Magdassi, Ibrahim Abdulhalim, Yi Long · 发表于：ACS Applied Materials & Interfaces · 年份：2016 · DOI：10.1021/acsami.6b12175 · 被引用次数：202 · 研究领域：Transition Metal Oxide Nanomaterials、Optical Wireless Communication Technologies、Photonic Crystals and Applications

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 (VO 2 ). VO 2 possesses thermochromic properties, whose potential remains unrealized due to an undesirable yellow-brown color. Here, a SiO 2 /VO 2 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 (Δ T sol = 11.0%) and high solar transmittance ( T lum = 49.6%). Experiments show that the color changes of VO 2 films are accompanied by NIR modulation. This work presents a novel way to manipulate VO 2 photonic structures to modulate light transmission as a function of wavelength at different temperatures.