Mode-based analysis of silicon nanohole arrays for photovoltaic applications

Publication Type:
Journal Article
Citation:
Optics Express, 2014, 22 (SUPPL. 5)
Issue Date:
2014-08-25
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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. © 2014 Optical Society of America.
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