A selective metasurface absorber with an amorphous carbon interlayer for solar thermal applications

Wan, Chenglong, Ho, Daniel, Nunez-Sanchez, S., Chen, Lifeng, Lopez-Garcia, Martin, Pugh, Jon, Zhu, Bofeng, Selvaraj, P., Mallick, T., Senthilarasu, S. and Cryan, Martin J. (2016) A selective metasurface absorber with an amorphous carbon interlayer for solar thermal applications. Nano Energy, 26. pp. 392-397. ISSN 2211-2855

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Abstract

This paper presents fabrication, measurement and modelling results for a metal-dielectric-metal metasurface absorber for solar thermal applications. The structure uses amorphous carbon as an inter-layer between thin gold films with the upper film patterned with a 2D periodic array using focused ion beam etching. The pattern has been optimised to give high absorptance from 400 to 1200 nm and low absorptance above this wavelength range to minimise thermal radiation and hence obtain higher temperature performance. Wide angle absorptance results are shown and detailed modelling of a realistic nanostructured upper layer results in excellent agreement between measured and modelled results. The use of gold in this paper is a first step towards a high temperature metasurface where gold can be replaced by other refractory metals such as tungsten or chrome.

Item Type:	Article
Uncontrolled Keywords:	Metasurface, Selective surface
Subjects:	H600 Electronic and Electrical Engineering J500 Materials Technology not otherwise specified
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Paul Burns
Date Deposited:	12 Sep 2019 13:42
Last Modified:	10 Oct 2019 15:17
URI:	http://nrl.northumbria.ac.uk/id/eprint/40664

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