Analysis of enhanced absorption in dense silicon nanowire arrays

Björn C. P. Sturmberg; Kokou B. Dossou; Lindsay C. Botten; Ara A. Asatryan; Christopher G. Poulton; C. Martijn de Sterke; Ross C. McPhedran

Analysis of enhanced absorption in dense silicon nanowire arrays

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

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

Abstract

We analyze the absorption of solar radiation by dense silicon nanowire arrays, which are being considered for use in solar cells. Though it is known that these structures absorb sunlight much more efficiently than bulk silicon, the mechanism is complicated and not understood. Using a novel, semi-analytic model, we show that the enhanced absorption can be attributed to a few modes of the array, which couple well to incident light, overlap well with the silicon, and exhibit strong Fabry-Pérot resonances. For some frequencies the absorption is further enhanced by slow light effects.

Original language	English
Title of host publication	Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011
Publisher	OSA - The Optical Society
Pages	1136-1138
Number of pages	3
ISBN (Print)	9780977565771
Publication status	Published - 2011
Externally published	Yes
Event	International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim - Sydney Duration: 28 Aug 2011 → 1 Sep 2011

Conference

Conference	International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim
City	Sydney
Period	28/08/11 → 1/09/11

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Sturmberg, B. C. P., Dossou, K. B., Botten, L. C., Asatryan, A. A., Poulton, C. G., Martijn de Sterke, C., & McPhedran, R. C. (2011). Analysis of enhanced absorption in dense silicon nanowire arrays. In Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011 (pp. 1136-1138). OSA - The Optical Society.

Sturmberg, Björn C. P. ; Dossou, Kokou B. ; Botten, Lindsay C. ; Asatryan, Ara A. ; Poulton, Christopher G. ; Martijn de Sterke, C. ; McPhedran, Ross C. / Analysis of enhanced absorption in dense silicon nanowire arrays. Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011. OSA - The Optical Society, 2011. pp. 1136-1138

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title = "Analysis of enhanced absorption in dense silicon nanowire arrays",

abstract = "We analyze the absorption of solar radiation by dense silicon nanowire arrays, which are being considered for use in solar cells. Though it is known that these structures absorb sunlight much more efficiently than bulk silicon, the mechanism is complicated and not understood. Using a novel, semi-analytic model, we show that the enhanced absorption can be attributed to a few modes of the array, which couple well to incident light, overlap well with the silicon, and exhibit strong Fabry-P{\'e}rot resonances. For some frequencies the absorption is further enhanced by slow light effects.",

author = "Sturmberg, {Bj{\"o}rn C. P.} and Dossou, {Kokou B.} and Botten, {Lindsay C.} and Asatryan, {Ara A.} and Poulton, {Christopher G.} and {Martijn de Sterke}, C. and McPhedran, {Ross C.}",

year = "2011",

language = "English",

isbn = "9780977565771",

pages = "1136--1138",

booktitle = "Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011",

publisher = "OSA - The Optical Society",

}

Sturmberg, BCP, Dossou, KB, Botten, LC, Asatryan, AA, Poulton, CG, Martijn de Sterke, C & McPhedran, RC 2011, Analysis of enhanced absorption in dense silicon nanowire arrays. in Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011. OSA - The Optical Society, pp. 1136-1138, International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim, Sydney, 28/08/11.

Analysis of enhanced absorption in dense silicon nanowire arrays. / Sturmberg, Björn C. P.; Dossou, Kokou B.; Botten, Lindsay C.; Asatryan, Ara A.; Poulton, Christopher G.; Martijn de Sterke, C.; McPhedran, Ross C.

Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011. OSA - The Optical Society, 2011. p. 1136-1138.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

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T1 - Analysis of enhanced absorption in dense silicon nanowire arrays

AU - Sturmberg, Björn C. P.

AU - Dossou, Kokou B.

AU - Botten, Lindsay C.

AU - Asatryan, Ara A.

AU - Poulton, Christopher G.

AU - Martijn de Sterke, C.

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AB - We analyze the absorption of solar radiation by dense silicon nanowire arrays, which are being considered for use in solar cells. Though it is known that these structures absorb sunlight much more efficiently than bulk silicon, the mechanism is complicated and not understood. Using a novel, semi-analytic model, we show that the enhanced absorption can be attributed to a few modes of the array, which couple well to incident light, overlap well with the silicon, and exhibit strong Fabry-Pérot resonances. For some frequencies the absorption is further enhanced by slow light effects.

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BT - Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011

PB - OSA - The Optical Society

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