Structured graphene metamaterial selective absorbers for high efficiency and omnidirectional solar thermal energy conversion.

Lin, K-T; Lin, H; Yang, T; Jia, B

Structured graphene metamaterial selective absorbers for high efficiency and omnidirectional solar thermal energy conversion.

Lin, K-T Lin, H Yang, T

Jia, B

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Publisher:: NATURE PUBLISHING GROUP
Publication Type:: Journal Article
Citation:: Nat Commun, 2020, 11, (1), pp. 1389
Issue Date:: 2020-03-13

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Field	Value	Language
dc.contributor.author	Lin, K-T
dc.contributor.author	Lin, H
dc.contributor.author	Yang, T https://orcid.org/0000-0002-8683-2072
dc.contributor.author	Jia, B
dc.date.accessioned	2022-10-30T18:54:42Z
dc.date.available	2020-02-18
dc.date.available	2022-10-30T18:54:42Z
dc.date.issued	2020-03-13
dc.identifier.citation	Nat Commun, 2020, 11, (1), pp. 1389
dc.identifier.issn	2041-1723
dc.identifier.issn	2041-1723
dc.identifier.uri	http://hdl.handle.net/10453/162938
dc.description.abstract	An ideal solar-thermal absorber requires efficient selective absorption with a tunable bandwidth, excellent thermal conductivity and stability, and a simple structure for effective solar thermal energy conversion. Despite various solar absorbers having been demonstrated, these conditions are challenging to achieve simultaneously using conventional materials and structures. Here, we propose and demonstrate three-dimensional structured graphene metamaterial (SGM) that takes advantages of wavelength selectivity from metallic trench-like structures and broadband dispersionless nature and excellent thermal conductivity from the ultrathin graphene metamaterial film. The SGM absorbers exhibit superior solar selective and omnidirectional absorption, flexible tunability of wavelength selective absorption, excellent photothermal performance, and high thermal stability. Impressive solar-to-thermal conversion efficiency of 90.1% and solar-to-vapor efficiency of 96.2% have been achieved. These superior properties of the SGM absorber suggest it has a great potential for practical applications of solar thermal energy harvesting and manipulation.
dc.format	Electronic
dc.language	eng
dc.publisher	NATURE PUBLISHING GROUP
dc.relation.ispartof	Nat Commun
dc.relation.isbasedon	10.1038/s41467-020-15116-z
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Structured graphene metamaterial selective absorbers for high efficiency and omnidirectional solar thermal energy conversion.
dc.type	Journal Article
utslib.citation.volume	11
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access	*
dc.date.updated	2022-10-30T18:54:38Z
pubs.issue	1
pubs.publication-status	Published online
pubs.volume	11
utslib.citation.issue	1

Abstract:

An ideal solar-thermal absorber requires efficient selective absorption with a tunable bandwidth, excellent thermal conductivity and stability, and a simple structure for effective solar thermal energy conversion. Despite various solar absorbers having been demonstrated, these conditions are challenging to achieve simultaneously using conventional materials and structures. Here, we propose and demonstrate three-dimensional structured graphene metamaterial (SGM) that takes advantages of wavelength selectivity from metallic trench-like structures and broadband dispersionless nature and excellent thermal conductivity from the ultrathin graphene metamaterial film. The SGM absorbers exhibit superior solar selective and omnidirectional absorption, flexible tunability of wavelength selective absorption, excellent photothermal performance, and high thermal stability. Impressive solar-to-thermal conversion efficiency of 90.1% and solar-to-vapor efficiency of 96.2% have been achieved. These superior properties of the SGM absorber suggest it has a great potential for practical applications of solar thermal energy harvesting and manipulation.

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http://hdl.handle.net/10453/162938