Preparation And Properties Of Black Zinc Selective Absorbers Formed By Reactive rf Sputtering

Michael G. Hutchins; Christopher C. Figgures; Geoffrey N. Childs

doi:10.1117/12.949943

6 March 1989 Preparation And Properties Of Black Zinc Selective Absorbers Formed By Reactive rf Sputtering

Michael G. Hutchins, Christopher C. Figgures, Geoffrey N. Childs

Proceedings Volume 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII; (1989) https://doi.org/10.1117/12.949943
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

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.

Citation Download Citation

Michael G. Hutchins, Christopher C. Figgures, and Geoffrey N. Childs "Preparation And Properties Of Black Zinc Selective Absorbers Formed By Reactive rf Sputtering", Proc. SPIE 1016, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion VII, (6 March 1989); https://doi.org/10.1117/12.949943

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