Aluminum Nano arrays for Plasmon-Enhanced Light Harvesting

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The practical limits of coinage-metal-based plasmonic materials demand sustainable, abundant alternatives with a wide plasmonic range of the solar energy spectrum. Aluminum (Al) is an emerging alternative, but its instability in aqueous environments critically limits its applicability to various light-harvesting systems. Here, we report a design strategy to achieve a robust platform for plasmon-enhanced light harvesting using Al nanostructures. The incorporation of mussel-inspired polydopamine nanolayers in the Al nanoarrays allowed for the reliable use of Al plasmonic resonances in a highly corrosive photocatalytic redox solution and provided nanoscale arrangement of organic photosensitizers on Al surfaces. The Al photosensitizer core shell assemblies exhibited plasmon-enhanced light absorption, which resulted in a 300% efficiency increase in photo-to-chemical conversion. Our strategy enables stable and advanced use of aluminum for plasmonic light harvesting.
Publisher
AMER CHEMICAL SOC
Issue Date
2015-06
Language
English
Article Type
Article
Citation

ACS NANO, v.9, no.6, pp.6206 - 6213

ISSN
1936-0851
DOI
10.1021/acsnano.5b01541
URI
http://hdl.handle.net/10203/200900
Appears in Collection
MS-Journal Papers(저널논문)
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