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Perovskite thermochromic smart window: Advanced optical properties and low transition temperature

Author

Listed:
  • Zhang, Y.
  • Tso, C.Y.
  • Iñigo, J.S.
  • Liu, S.
  • Miyazaki, H.
  • Chao, Christopher Y.H.
  • Yu, K.M.

Abstract

Windows are one of the most inefficient components in buildings. Common thermochromic smart windows using VO2 can mitigate such energy loss. However, they suffer from several problems, namely, low solar modulation ability, high transition temperature (i.e. 68 °C) and low luminous transmittance. In this study, we propose a perovskite thermochromic smart window towards achieving high solar modulation ability whilst maintaining a high luminous transmittance and a low transition temperature. Perovskite material shows a significant thermochromism in the visible and ultraviolet region. Since half of the photons lie in this spectral region, a high solar modulation can be achieved by perovskites. The material was optimized by varying the spin speed in the fabrication process as well as the mixing ratio between precursors. The optimized sample exhibits a solar modulation ability of 25.5% with luminous transmittance of 34.3% and higher than 85% in the hot (80 °C) and cold (25 °C) states, respectively, making this material suitable for practical device applications. The hysteresis loop, the transition temperature as well as transition time in relation to the relative humidity of a perovskite smart window during the heating and cooling process are investigated in this study. From field tests results, the perovskite smart window can help reduce the indoor air temperature by about 2.5 °C compared to a normal window. Overall, based on the results obtained in this study, the perovskite thermochromic smart window has potential to achieve excellent thermochromic properties, providing an alternative to alleviate the high energy consumed in buildings.

Suggested Citation

  • Zhang, Y. & Tso, C.Y. & Iñigo, J.S. & Liu, S. & Miyazaki, H. & Chao, Christopher Y.H. & Yu, K.M., 2019. "Perovskite thermochromic smart window: Advanced optical properties and low transition temperature," Applied Energy, Elsevier, vol. 254(C).
    • Handle: RePEc:eee:appene:v:254:y:2019:i:c:s0306261919313777
    DOI: 10.1016/j.apenergy.2019.113690
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    References listed on IDEAS

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    1. Yang, Jian & Xu, Zhengtao & Ye, Hong & Xu, Xiaojie & Wu, Xi & Wang, Jianxiang, 2015. "Performance analyses of building energy on phase transition processes of VO2 windows with an improved model," Applied Energy, Elsevier, vol. 159(C), pages 502-508.
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    Citations

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    Cited by:

    1. Jiang, Tengyao & Zhao, Xinpeng & Yin, Xiaobo & Yang, Ronggui & Tan, Gang, 2021. "Dynamically adaptive window design with thermo-responsive hydrogel for energy efficiency," Applied Energy, Elsevier, vol. 287(C).
    2. Sun, Yanyi & Liu, Xin & Ming, Yang & Liu, Xiao & Mahon, Daniel & Wilson, Robin & Liu, Hao & Eames, Philip & Wu, Yupeng, 2021. "Energy and daylight performance of a smart window: Window integrated with thermotropic parallel slat-transparent insulation material," Applied Energy, Elsevier, vol. 293(C).
    3. Wang, Xuanjie & Narayan, Shankar, 2022. "Thermal radiative switching interface for energy-efficient temperature control," Renewable Energy, Elsevier, vol. 197(C), pages 574-582.
    4. Sai Liu & Yang Li & Ying Wang & Yuwei Du & Kin Man Yu & Hin-Lap Yip & Alex K. Y. Jen & Baoling Huang & Chi Yan Tso, 2024. "Mask-inspired moisture-transmitting and durable thermochromic perovskite smart windows," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    5. Zhang, Yi & Tennakoon, Thilhara & Chan, Yin Hoi & Chan, Ka Chung & Fu, Sau Chung & Tso, Chi Yan & Yu, Kin Man & Huang, Bao Ling & Yao, Shu Huai & Qiu, Hui He & Chao, Christopher Y.H., 2022. "Energy consumption modelling of a passive hybrid system for office buildings in different climates," Energy, Elsevier, vol. 239(PA).
    6. Liu, Sai & Tso, Chi Yan & Du, Yu Wei & Chao, Luke Christopher & Lee, Hau Him & Ho, Tsz Chung & Leung, Michael Kwok Hi, 2021. "Bioinspired thermochromic transparent hydrogel wood with advanced optical regulation abilities and mechanical properties for windows," Applied Energy, Elsevier, vol. 297(C).
    7. Bui, Dac-Khuong & Nguyen, Tuan Ngoc & Ghazlan, Abdallah & Ngo, Ngoc-Tri & Ngo, Tuan Duc, 2020. "Enhancing building energy efficiency by adaptive façade: A computational optimization approach," Applied Energy, Elsevier, vol. 265(C).
    8. Ke, Yujie & Tan, Yutong & Feng, Chengchen & Chen, Cong & Lu, Qi & Xu, Qiyang & Wang, Tao & Liu, Hai & Liu, Xinghai & Peng, Jinqing & Long, Yi, 2022. "Tetra-Fish-Inspired aesthetic thermochromic windows toward Energy-Saving buildings," Applied Energy, Elsevier, vol. 315(C).
    9. Zhao, Xinpeng & Mofid, Sohrab Alex & Jelle, Bjørn Petter & Tan, Gang & Yin, Xiaobo & Yang, Ronggui, 2020. "Optically-switchable thermally-insulating VO2-aerogel hybrid film for window retrofits," Applied Energy, Elsevier, vol. 278(C).
    10. Garlisi, Corrado & Trepci, Esra & Li, Xuan & Al Sakkaf, Reem & Al-Ali, Khalid & Nogueira, Ricardo Pereira & Zheng, Lianxi & Azar, Elie & Palmisano, Giovanni, 2020. "Multilayer thin film structures for multifunctional glass: Self-cleaning, antireflective and energy-saving properties," Applied Energy, Elsevier, vol. 264(C).

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