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Light absorption enhancement in thin silicon film by embedded metallic nanoshells

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Abstract

Computer simulation studies of absorption enhancement in a silicon (Si) substrate by nanoshell-related localized surface plasmon resonance (LSPR) based on a finite-difference time-domain analysis are presented. The results of these studies show significant enhancement of over 15× in the near-bandgap spectral region of Si, using 40 nm diameter, two-dimensional silver (Ag) nanoshells, simulating cylindrical nanoshell structure. The studies also indicate a clear advantage of the cylindrical nanoshell structure over that of a completely filled Ag-nanocylinders. The enhancement was studied as a function of the metallic shell thickness. The results suggest that the main enhancement mechanism in this case of tubular nanoshells embedded in the Si substrate is that of field-enhanced absorption caused by the strong LSPR-enhanced electric field, extending into the silicon substrate.

© 2010 Optical Society of America

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Corrections

Oren Guilatt, Boris Apter, and Uzi Efron, "Light absorption enhancement in thin silicon film by embedded metallic nanoshells: erratum," Opt. Lett. 36, 1239-1239 (2011)
https://opg.optica.org/ol/abstract.cfm?uri=ol-36-7-1239

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