期刊
ACS NANO
卷 9, 期 6, 页码 6206-6213出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b01541
关键词
plasmon; aluminum; polydopamine; light harvesting; nanoantenna
类别
资金
- National Research Foundation (NRF) via the National Leading Research Laboratory [NRF-2013R1A2A1A05005468]
- Intelligent Synthetic Biology Center of Global Frontier R&D Project, Republic of Korea [2011-0031957]
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [NRF-2013M3C1A3063598]
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.
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