Nanowire array photovoltaics

Radial disorder versus design for optimal efficiency

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 journalArticle

30 Citations (Scopus)

Abstract

Solar cell designs based on disordered nanostructures tend to have higher efficiencies than structures with uniform absorbers, though the reason is poorly understood. To resolve this, we use a semi-analytic approach to determine the physical mechanism leading to enhanced efficiency in arrays containing nanowires with a variety of radii. We use our findings to systematically design arrays that outperform randomly composed structures. An ultimate efficiency of 23.75 is achieved with an array containing 30 silicon, an increase of almost 10 over a homogeneous film of equal thickness.

Original languageEnglish
Article number173902
Pages (from-to)173902-1-173902-4
Number of pages4
JournalApplied Physics Letters
Volume101
Issue number17
DOIs
Publication statusPublished - 22 Oct 2012
Externally publishedYes

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    Sturmberg, B. C. P., Dossou, K. B., Botten, L. C., Asatryan, A. A., Poulton, C. G., McPhedran, R. C., & Martijn De Sterke, C. (2012). Nanowire array photovoltaics: Radial disorder versus design for optimal efficiency. Applied Physics Letters, 101(17), 173902-1-173902-4. [173902]. https://doi.org/10.1063/1.4761957