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

Chenglong Wan, Yinglung Ho, S. Nunez-Sanchez, Lifeng Chen, M. Lopez-Garcia, J. Pugh, Bofeng Zhu, P. Selvaraj, T. Mallick, S. Senthilarasu, M. J. Cryan*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

14 Citations (Scopus)
262 Downloads (Pure)

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.

Original languageEnglish
Pages (from-to)392-397
Number of pages6
JournalNano Energy
Volume26
Early online date26 May 2016
DOIs
Publication statusPublished - 1 Aug 2016

Keywords

  • Metasurface
  • Selective surface

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    Wan, C., Ho, Y., Nunez-Sanchez, S., Chen, L., Lopez-Garcia, M., Pugh, J., Zhu, B., Selvaraj, P., Mallick, T., Senthilarasu, S., & Cryan, M. J. (2016). A selective metasurface absorber with an amorphous carbon interlayer for solar thermal applications. Nano Energy, 26, 392-397. https://doi.org/10.1016/j.nanoen.2016.05.013