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Journal of Photonics for Energy

Optical properties of boride ultrahigh-temperature ceramics for solar thermal absorbers
Author(s): Elisa Sani; Mario Meucci; Luca Mercatelli; David Jafrancesco; Jean-Louis Sans; Laura Silvestroni; Diletta Sciti
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Paper Abstract

It is a known rule that the efficiency of thermodynamic solar plants increases with the working temperature. At present, the main limit in temperature upscaling is the absorber capability to withstand high temperatures. The ideal solar absorber works at high temperatures and has both a low thermal emissivity and a high absorptivity in the solar spectral range. The present work reports on the preparation and optical characterization of hafnium and zirconium diboride ultrahigh-temperature ceramics for innovative solar absorbers operating at high temperature. Spectral hemispherical reflectance from the ultraviolet to the mid-infrared wavelength region and high-temperature hemispherical emittance reveal their potential for high-temperature solar applications. Boride samples are compared with silicon carbide (SiC), a material already used in solar furnaces.

Paper Details

Date Published: 18 February 2014
PDF: 9 pages
J. Photon. Energy. 4(1) 045599 doi: 10.1117/1.JPE.4.045599
Published in: Journal of Photonics for Energy Volume 4, Issue 1
Show Author Affiliations
Elisa Sani, Istituto Nazionale di Ottica (Italy)
Mario Meucci, Istituto Nazionale di Ottica (Italy)
Luca Mercatelli, Istituto Nazionale di Ottica (Italy)
David Jafrancesco, Istituto Nazionale di Ottica (Italy)
Jean-Louis Sans, PROMES-CNRS (France)
Laura Silvestroni, Consiglio Nazionale delle Ricerche (Italy)
Diletta Sciti, Consiglio Nazionale delle Ricerche (Italy)


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