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Research Article

Dual-functional conductive nanofilm absorber

Hongyan Liu1,§Zheng Xie2,§Weiming Liu1Hongdong Li3Yue Yan1Xiaoli Wang3,4( )
Beijing Institute of Aeronautical Materials, Beijing 100095, China
College of Rare Earth and Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

§ Hongyan Liu and Zheng Xie contributed equally to this work.

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Graphical Abstract

A novel hybrid photocatalytic-thermal technology, with dual functions of heat absorption and photocatalysis, was proposed to make full use of the solar energy. In addition to the broadband spectral usage, the virtues of inexpensiveness and environmental friendliness make it a facile alternative to be applied in solar energy transformation.

Abstract

Converting solar energy by to other forms of energy has attracted a lot of interest from academy to industry. However, the overall utilization efficiency of solar energy is inferior due to the limited effective solar spectrum range. Here, in order to utilize the broadband solar spectrum more efficiently, a novel hybrid absorber structure was proposed, which consists of a four-layer planar nanofilm with dual functions of heat absorption and photocatalysis. The average absorption in the visible range is larger than 0.95, and in the near-infrared spectral region, the average absorption is still larger than 0.85. The overall absorption of the absorber is over 0.86, while the thermal emittance is lower than 0.04, which can lead to remarkable thermal utilization efficiency. Moreover, the full range of the solar irradiance can be utilized by incorporating the photocatalytic TiO2 layer into the absorber, which is active in the ultraviolet spectral range. In addition to the broadband spectral usage, the virtues of inexpensiveness and environmental friendliness make it a facile alternative to be applied in solar energy transformation.

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Nano Research
Pages 13375-13380
Cite this article:
Liu H, Xie Z, Liu W, et al. Dual-functional conductive nanofilm absorber. Nano Research, 2023, 16(12): 13375-13380. https://doi.org/10.1007/s12274-023-5870-0
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Received: 12 April 2023
Revised: 17 May 2023
Accepted: 24 May 2023
Published: 26 June 2023
© Tsinghua University Press 2023
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