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Tunable Color-Variable Solar Absorber Based on Phase Change Material Sb2Se3.

Xin Li1, Mingyu Luo2, Xinpeng Jiang1

  • 1Center of Material Science, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China.

Nanomaterials (Basel, Switzerland)
|June 10, 2022
PubMed
Summary

This study introduces a dynamic solar absorber using antimony selenide (Sb2Se3) that changes color with phase transitions. This material maintains high absorption and offers tunable colors for various applications.

Keywords:
dynamic color-variable solar absorberphase change material Sb2Se3

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Area of Science:

  • Materials Science
  • Optics
  • Nanotechnology

Background:

  • Solar absorbers are crucial for renewable energy technologies.
  • Developing dynamic absorbers with tunable optical properties is an active research area.
  • Phase change materials offer potential for responsive optical devices.

Purpose of the Study:

  • To design and investigate a dynamic color-variable solar absorber.
  • To explore the optical properties of antimony selenide (Sb2Se3) based on its phase transition.
  • To assess the potential applications of such a tunable absorber.

Main Methods:

  • Fabrication of a solar absorber structure utilizing Sb2Se3 as the phase change material.
  • Characterization of optical absorption across different phases (amorphous and crystalline) of Sb2Se3.
  • Analysis of color variation with respect to phase transition, crystalline fraction, incident angle, and geometric parameters.

Main Results:

  • The designed absorber maintains high absorption in both amorphous Sb2Se3 (aSb2Se3) and crystalline Sb2Se3 (cSb2Se3) states.
  • A clear color contrast is observed before and after the phase transition.
  • Color variations are evident with different crystalline fractions, incident angles, and geometric parameters.
  • The structure exhibits insensitivity to polarization angle due to high symmetry.

Conclusions:

  • The Sb2Se3-based solar absorber demonstrates dynamic color-variable properties.
  • The material shows significant potential for applications requiring tunable optical responses.
  • The design offers a promising platform for advanced optical devices and solar energy applications.