Nanomaterials (Dec 2020)

Flexible Transparent Heat Mirror for Thermal Applications

  • Shimin Li,
  • Qianqian Xu,
  • Ziji Zhou,
  • Wenchao Zhao,
  • Xiaowen Li,
  • Zhengji Wen,
  • Yao Yao,
  • Hao Xu,
  • Huiyong Deng,
  • Ning Dai,
  • Jiaming Hao

DOI
https://doi.org/10.3390/nano10122479
Journal volume & issue
Vol. 10, no. 12
p. 2479

Abstract

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Transparent heat mirrors have been attracting a great deal of interest in the last few decades due to their broad applications, which range from solar thermal convection to energy-saving. Here, we present a flexible Polyethylene terephthalate/Ag-doped Indium tin oxide/Polydimethylsiloxane (PAIP) thin film that exhibits high transmittance in visible range and low emissivity in the thermal infrared region. Experimental results show that the temperature of the sample can be as high as 108 °C, which is ~23 °C higher than that of a blackbody control sample under the same solar radiation. Without solar radiation, the temperature of the PAIP thin film is ~6 °C higher than that of ordinary fabric. The versatility of the large-area, low-radiation-loss, highly-transparent and flexible hydrophobic PAIP thin film suggest great potential for practical applications in thermal energy harvesting and manipulation.

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