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- Title
All‐Solid‐State Transparent Variable Infrared Emissivity Devices for Multi‐Mode Smart Windows.
- Authors
Zhang, Hulin; Zhang, Xiang; Sun, Wenhai; Chen, Mingjun; Xiao, Yingjun; Ding, Zhenmin; Yan, Dukang; Deng, Jianbo; Li, Zitong; Zhao, Jiupeng; Li, Yao
- Abstract
Smart windows that incorporate photothermal modulators (PMs) can independently regulate solar transmittance and infrared (IR) emissivity to improve building comfort and reduce energy consumption. Herein, a novel all‐solid‐state variable IR emissivity device (VED) is first designed and fabricated with a high visible irradiation transmittance (T′vis = 0.79) and solar irradiation transmittance (T′sol = 0.75) using an ITO/SiO2/ITO Fabry–Perot cavity structure. The VED exhibits different IR emissivity (ɛ) values at positive (ɛP = 0.80) and negative (ɛN = 0.38) bias, allowing for dynamic regulation of radiation by controlling the electrical conductivity of the indium tin oxide (ITO) layer. Furthermore, an all‐solid‐state PM with a structure of ITO/SiO2/ITO/Glass/ITO/NiO/ZrO2/Li/WO3/ITO, which is capable of independently regulating solar transmittance (ΔT'sol = 0.31) and IR emissivity (Δɛ2.5–25 µm = 0.42), is fabricated. The multi‐mode smart window incorporating PMs can achieve "bright," "dark," "warm," and "cool" modes, making them suitable for deployment in diverse climate zones. The innovative smart window holds a massive potential for use in reducing building energy consumption.
- Subjects
ELECTROCHROMIC windows; INFRARED equipment; ENERGY consumption of buildings; SMART devices; CLIMATIC zones; ELECTRICAL conductivity measurement
- Publication
Advanced Functional Materials, 2024, Vol 34, Issue 16, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202307356