Mode-based analysis of silicon nanohole arrays for photovoltaic applications

We investigate the optical properties of silicon nanohole arrays for application in photovoltaic cells in terms of the modes within the structure. We highlight three types of modes: fundamental modes, important at long wavelengths; guided resonance modes, which enhance absorption for wavelengths whe...

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Bibliographic Details
Published in:Optics express 2014-08, Vol.22 Suppl 5 (S5), p.A1343-A1354
Main Authors: Donnelly, Justin L, Sturmberg, Björn C P, Dossou, Kokou B, Botten, Lindsay C, Asatryan, Ara A, Poulton, Christopher G, McPhedran, Ross C, Martijn de Sterke, C
Format: Article
Language:English
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Summary:We investigate the optical properties of silicon nanohole arrays for application in photovoltaic cells in terms of the modes within the structure. We highlight three types of modes: fundamental modes, important at long wavelengths; guided resonance modes, which enhance absorption for wavelengths where the intrinsic absorption of silicon is low; and channeling modes, which suppress front-surface reflection. We use this understanding to explain why the parameters of optimized nanohole arrays occur in specific ranges even as the thickness is varied.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.22.0A1343