Mode-based analysis of silicon nanohole arrays for photovoltaic applications

Justin L. Donnelly, Björn C.P. Sturmberg*, Kokou B. Dossou, Lindsay C. Botten, Ara A. Asatryan, Christopher G. Poulton, Ross C. McPhedran, C. Martijn De Sterke

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)A1343-A1354
Number of pages12
JournalOptics Express
Issue numberS5
Publication statusPublished - 25 Aug 2014
Externally publishedYes


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