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Proceedings Paper

Preparation And Properties Of Black Zinc Selective Absorbers Formed By Reactive rf Sputtering
Author(s): Michael G. Hutchins; Christopher C. Figgures; Geoffrey N. Childs
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Paper Abstract

Black zinc selective solar absorber coatings with solar absorptance 0.94 and thermal emittance 0.21 have been prepared by the reactive rf sputtering of Zn targets in Ar-02 atmospheres. For these films the zinc to oxygen ratio is greater than one and the films are composed of both zinc and zinc oxide. The surface microstructure of the films considerably enhances the short wavelength absorptance properties. The coatings represent a possible low-cost selective absorber for flat plate and evacuated tube solar collector applications.

Paper Details

Date Published: 6 March 1989
PDF: 6 pages
Proc. SPIE 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII, (6 March 1989); doi: 10.1117/12.949943
Show Author Affiliations
Michael G. Hutchins, Oxford Polytechnic (England)
Christopher C. Figgures, Oxford Polytechnic (England)
Geoffrey N. Childs, Oxford Polytechnic (England)


Published in SPIE Proceedings Vol. 1016:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII
Claes-Goeran Granqvist; Carl M. Lampert, Editor(s)

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