Plasmonic light-harvesting devices over the whole visible spectrum.
basic_science · Level V
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- Record sourced from PubMed, PMID 20518545.
- Also identified by DOI 10.1021/nl101235d.
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Abstract
On the basis of conformal transformation, a general strategy is proposed to design plasmonic nanostructures capable of an efficient harvesting of light over a broadband spectrum. The surface plasmon modes propagate toward the singularity of these structures where the group velocity vanishes and energy accumulates. A considerable field enhancement and confinement is thus expected. Radiation losses are also investigated when the structure dimension becomes comparable to the wavelength.