Absorption enhancing proximity effects in aperiodic nanowire arrays

Björn C P Sturmberg, Kokou B. Dossou, Lindsay C. Botten, Ara A. Asatryan, Christopher G. Poulton, Ross C. Mc Phedran, Martijn De Sterke

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Aperiodic Nanowire (NW) arrays have higher absorption than equivalent periodic arrays, making them of interest for photovoltaic applications. An inevitable property of aperiodic arrays is the clustering of some NWs into closer proximity than in the equivalent periodic array. We focus on the modes of such clusters and show that the reduced symmetry associated with cluster formation allows external coupling into modes which are dark in periodic arrays, thus increasing absorption. To exploit such modes fully, arrays must include tightly clustered NWs that are unlikely to arise from fabrication variations but must be created intentionally.

Original languageEnglish
Pages (from-to)A964-A969
Number of pages6
JournalOptics Express
Volume21
Issue numberS6
DOIs
Publication statusPublished - 4 Nov 2013
Externally publishedYes

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