A Selective Metasurface Absorber with An Amorphous Carbon Interlayer for Solar Thermal Applications
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 patterned has been optimised to give high absorptance from 400-1200nm 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.
Keywords
Cite
@article{arxiv.1605.03723,
title = {A Selective Metasurface Absorber with An Amorphous Carbon Interlayer for Solar Thermal Applications},
author = {Chenglong Wan and Yinglung Ho and S. Nunez-Sanchez and Lifeng Chen and M. Lopez-Garcia and J. Pugh and Bofeng Zhu and P. Selvaraj and T. Mallick and S. Senthilarasu and M. J. Cryan},
journal= {arXiv preprint arXiv:1605.03723},
year = {2016}
}