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Wallentin J, Anttu N, Asoli D, et al. InP nanowire array solar cells achieving 13.8% efficiency by exceeding the ray optics limit. Science. 2013;339(6123):1057-60doi: 10.1126/science.1230969.
Wallentin, J., Anttu, N., Asoli, D., Huffman, M., Aberg, I., Magnusson, M. H., Siefer, G., Fuss-Kailuweit, P., Dimroth, F., Witzigmann, B., Xu, H. Q., Samuelson, L., Deppert, K., & Borgström, M. T. (2013). InP nanowire array solar cells achieving 13.8% efficiency by exceeding the ray optics limit. Science (New York, N.Y.), 339(6123), 1057-60. https://doi.org/10.1126/science.1230969
Wallentin, Jesper, et al. "InP nanowire array solar cells achieving 13.8% efficiency by exceeding the ray optics limit." Science (New York, N.Y.) vol. 339,6123 (2013): 1057-60. doi: https://doi.org/10.1126/science.1230969
Wallentin J, Anttu N, Asoli D, Huffman M, Aberg I, Magnusson MH, Siefer G, Fuss-Kailuweit P, Dimroth F, Witzigmann B, Xu HQ, Samuelson L, Deppert K, Borgström MT. InP nanowire array solar cells achieving 13.8% efficiency by exceeding the ray optics limit. Science. 2013 Mar 01;339(6123):1057-60. doi: 10.1126/science.1230969. Epub 2013 Jan 17. PMID: 23328392.
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Science. 2013 Mar 01;339(6123):1057-60. doi: 10.1126/science.1230969. Epub 2013 Jan 17.

InP nanowire array solar cells achieving 13.8% efficiency by exceeding the ray optics limit.

Science (New York, N.Y.)

Jesper Wallentin, Nicklas Anttu, Damir Asoli, Maria Huffman, Ingvar Aberg, Martin H Magnusson, Gerald Siefer, Peter Fuss-Kailuweit, Frank Dimroth, Bernd Witzigmann, H Q Xu, Lars Samuelson, Knut Deppert, Magnus T Borgström

Affiliations

  1. Solid State Physics, Lund University, Lund, Sweden.

PMID: 23328392 DOI: 10.1126/science.1230969

Abstract

Photovoltaics based on nanowire arrays could reduce cost and materials consumption compared with planar devices but have exhibited low efficiency of light absorption and carrier collection. We fabricated a variety of millimeter-sized arrays of p-type/intrinsic/n-type (p-i-n) doped InP nanowires and found that the nanowire diameter and the length of the top n-segment were critical for cell performance. Efficiencies up to 13.8% (comparable to the record planar InP cell) were achieved by using resonant light trapping in 180-nanometer-diameter nanowires that only covered 12% of the surface. The share of sunlight converted into photocurrent (71%) was six times the limit in a simple ray optics description. Furthermore, the highest open-circuit voltage of 0.906 volt exceeds that of its planar counterpart, despite about 30 times higher surface-to-volume ratio of the nanowire cell.

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