Enhanced absorption efficiency of ultrathin metamaterial solar absorbers by plasmonic Fano resonance
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Date
2015
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Abstract
We demonstrate a proof of principle that plasmonic Fano resonance can provide a complementary enhancement
mechanism boosting the absorption efficiency of thin metamaterial solar absorbers over a wide angle of incidence
under both TE and TM polarizations. Fano resonances are induced in arrays of two asymmetric metallic
nanodimers coupled to a metallic layer through an intermediate insulator thin film. The resulting moderate
resonant peaks shown in the scattering spectrum are predicted to play a dominant role in light-trapping
enhancement
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Keywords
Metamaterials; Surface plasmons; Resonance; Scattering; Metallic, opaque, and absorbing coatings.