High-temperature selective solar thermal absorber based on Fabry-Perot resonance cavity

Hao Wang, Liping Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work, we investigate the design, fabrication and characterization of a multilayer selective solar absorber made of metallic and dielectric thin films. The investigated selective absorber exhibits theoretical spectral absorptance higher than 95% within solar spectrum and infrared emittance lower than 5%, due to the Fabry-Perot resonance and antireflection effect. In terms of fabrication, different materials are tested under high temperatures in order to obtain the structure with best thermal stability. Structures with different materials are fabricated with sputtering, chemical vapor deposition and electron beam evaporation techniques. The near normal reflectance is characterized with a Fourier Transform Infrared spectrometer for these structures before and after heat treatment. Meanwhile, Rutherford backscattering Spectroscopy is employed to analyze the diffusion and oxidation conditions during the heating process. Moreover, better material choice and fabrication techniques are considered to construct solar absorber sample with better high temperature thermal stability.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9559
ISBN (Print)9781628417258
DOIs
StatePublished - 2015
EventHigh and Low Concentrator Systems for Solar Energy Applications X - San Diego, United States
Duration: Aug 10 2015Aug 11 2015

Other

OtherHigh and Low Concentrator Systems for Solar Energy Applications X
CountryUnited States
CitySan Diego
Period8/10/158/11/15

Keywords

  • CSP
  • solar absorber
  • spectral selectivity
  • thermal stability

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • Cite this

    Wang, H., & Wang, L. (2015). High-temperature selective solar thermal absorber based on Fabry-Perot resonance cavity. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9559). [955907] SPIE. https://doi.org/10.1117/12.2186839