5 September 2015 High-temperature selective solar thermal absorber based on Fabry-Perot resonance cavity
Author Affiliations +
Proceedings Volume 9559, High and Low Concentrator Systems for Solar Energy Applications X; 955907 (2015); doi: 10.1117/12.2186839
Event: SPIE Optics + Photonics for Sustainable Energy, 2015, San Diego, California, United States
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.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hao Wang, Liping Wang, "High-temperature selective solar thermal absorber based on Fabry-Perot resonance cavity", Proc. SPIE 9559, High and Low Concentrator Systems for Solar Energy Applications X, 955907 (5 September 2015); doi: 10.1117/12.2186839; http://dx.doi.org/10.1117/12.2186839
PROCEEDINGS
11 PAGES


SHARE
KEYWORDS
Nickel

Platinum

Silica

Solar energy

Silicon

Reflectivity

Diffusion

Back to Top