Advanced coatings and structures for enhancing concentrating solar power efficiency

Hassiba Ait-Sadi, Djillali Bekhiti, Larbi Hemmouche, Rihab Zellagui and Amel Halimi

Renewable and Sustainable Energy Reviews, 2025, vol. 211, issue C

Abstract: A comprehensive study of solar energy systems is carried out, specifically focusing on concentrating solar power (CSP) systems. This survey explores the advanced field of selective absorber coatings in depth, highlighting the potential of tandem structures to significantly enhance solar absorption. Integrating stainless steel substrates in CSP systems, combined with infrared-reflective layers such as tungsten and chromium, represents a sophisticated strategy for enhancing efficiency and durability. The exploration of coatings such as aluminium nitride and chromium nitride is particularly noteworthy, as the paper elucidates their capabilities in enhancing solar absorption. Advanced absorber coatings such as chromium aluminium nitride/oxynitride and tungsten aluminium nitride/oxynitride, which incorporate a combination of chromium, aluminium, nitrogen, and oxygen, demonstrate innovative strategies for enhancing solar absorption efficiency while minimising thermal losses. These innovations could expand to coatings beyond CSP systems, such as energy storage and catalysis. The incorporation of anti-reflection coatings, such as chromium oxide and stoichiometric silicon oxide, is an effective approach to reducing reflection losses and improving the overall efficiency of solar energy systems. The paper's comprehensive analysis and innovative strategies underscore its potential impact in advancing solar energy technology. This research addresses challenges related to scalability, cost-effectiveness and long-term durability, and could lead to significant proposed advancements in the CSP systems, thereby supporting global sustainable energy efforts.

Keywords: Solar absorber coatings; Anti-reflection layers; Concentrated solar power; Thermal stability; Optical enhancement (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.rser.2024.115270

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