Understanding spectrally selective properties of solar absorbers

Dan, A and Basu, B (2020) Understanding spectrally selective properties of solar absorbers. [Book Chapter]

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Abstract

The fabrication of spectrally selective absorbers represents a critical technology necessary in the domain of solar energy. The well-known demand of high absorptance, low emittance, and enhanced thermal, as well as environmental stability complicates efforts to develop strategies for improving a materials’ spectral selectivity. Despite several reports on spectrally selective absorbers, these studies are mainly focused on two critical factors: spectral selectivity and thermal stability. While demand for spectrally selective absorbers is growing continuously, the photothermal conversion efficiency at elevated temperature is still not sufficient for these systems to reach the targeted outcome for an installed collector. Therefore, there is an urgent need to investigate the factors influencing spectral selectivity and thermal stability. To address these issues, this chapter focuses on design, development and optical properties of solar absorbers. Along with that, an extensive study on the physical factors tailoring spectral selectivity of absorbers has been performed and the related matters are discussed in detail in this chapter. Finally, this chapter highlights future prospects and possible direction toward the fabrication of next-generation solar absorber thin films. © 2020 Elsevier Inc. All rights reserved.

Item Type:	Book Chapter
Publication:	Energy Saving Coating Materials: Design, Process, Implementation and Recent Developments
Publisher:	Elsevier
Additional Information:	The copyright for this article belongs to Elsevier.
Keywords:	photothermal conversion efficiency; solar thermal energy; spectrally selective solar absorbers; thermal stability
Department/Centre:	Division of Chemical Sciences > Materials Research Centre Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research
Date Deposited:	16 Jan 2023 06:52
Last Modified:	16 Jan 2023 06:52
URI:	https://eprints.iisc.ac.in/id/eprint/79172

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