High optical transmittance of aluminum ultrathin film with hexagonal nanohole arrays as transparent electrode
2016
We fabricate samples of aluminum ultrathin films with
hexagonal nanohole arrays and characterize the transmission performance. High optical transmittance larger than 60% over a broad wavelength range from 430 nm to 750 nm is attained experimentally. The Fano-type resonance of the excited surface plasmon plaritons and the directly
transmitted light attribute to both of the broadband transmission enhancement and the transmission suppression dips.
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