Abstract
An energy efficient nanoplasmonic metascreen is tailored to support near perfect absorption of sunlight around visible frequency range. To efficiently tap sunlight source, the metascreen is designed to perfectly absorb a spectrally dense region of solar spectrum. The absorption efficiency depends upon the choice of plasmonic material and optical thickness of the dielectric substrate between the metascreen and ground reflector. Alternative plasmonic materials including copper and aluminum are evaluated for their absorption characteristics, and their performance is compared to that of conventional gold and silver. Intrinsic surface plasmon resonance damping in copper-based metascreen platform is ideally suited to absorb an overall 72% of solar spectral irradiance between 400 and 1800 nm wavelength. The proposed polarization independent metascreen absorber can efficiently trap light to improve overall efficiency of solar cell.
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