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- W1239044808 abstract "The design of an efficient and stable solar selective coating for Concentrating Solar Power central receivers requires acomplex study of the materials candidates that compose the coating. Carbon-transition metal nanocomposites werestudied in this work as absorber materials because they show appropriate optical properties with high absorption in thesolar region and low thermal emittance in the infrared. Furthermore metal carbides are thermal and mechanical stable inair at high temperatures. In this work a solar selective coating was grown by a dual source filtered cathodic vacuum arc. The complete stackconsists on an infrared reflection layer, an absorber layer of carbon-zirconium carbide nanocomposites and anantireflection layer. The aim of this research is optimize the absorber layer and for that, the metal content was controlledby adjusting the pulse ratio between the two arc sources. The elemental composition was determined by Ion BeamAnalysis, X-Ray diffraction measurements show the crystal structure and the optical properties were characterized byspectroscopic ellipsometry measurements. The reflectance spectra of the complete selective coating were simulated withthe optical software CODE. Bruggeman effective medium approximation was employed to average the dielectricfunctions of the two components which constitute the nanocomposite in the absorber layer. The optimized coatingexhibited a solar absorptance of 95.41% and thermal emittance of 3.5% for 400°C. The simulated results were validatedwith a deposited multilayer selective coating." @default.
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- W1239044808 date "2015-09-05" @default.
- W1239044808 modified "2023-09-23" @default.
- W1239044808 title "Solar selective coatings based on carbon: transition metal nanocomposites" @default.
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- W1239044808 doi "https://doi.org/10.1117/12.2189515" @default.
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