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Photovoltaic Measurements in Single-Nanowire Silicon Solar Cells

Kelzenberg, Michael D. and Turner-Evans, Daniel B. and Kayes, Brendan M. and Filler, Michael A. and Putnam, Morgan C. and Lewis, Nathan S. and Atwater, Harry A. (2008) Photovoltaic Measurements in Single-Nanowire Silicon Solar Cells. Nano Letters, 8 (2). pp. 710-714. ISSN 1530-6984. doi:10.1021/nl072622p.

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Single-nanowire solar cells were created by forming rectifying junctions in electrically contacted vapor−liquid−solid-grown Si nanowires. The nanowires had diameters in the range of 200 nm to 1.5 μm. Dark and light current−voltage measurements were made under simulated Air Mass 1.5 global illumination. Photovoltaic spectral response measurements were also performed. Scanning photocurrent microscopy indicated that the Si nanowire devices had minority carrier diffusion lengths of ∼2 μm. Assuming bulk-dominated recombination, this value corresponds to a minimum carrier lifetime of ∼15 ns, or assuming surface-dominated recombination, to a maximum surface recombination velocity of approximately 1350 cm s^(-1). The methods described herein comprise a valuable platform for measuring the properties of semiconductor nanowires, and are expected to be instrumental when designing an efficient macroscopic solar cell based on arrays of such nanostructures.

Item Type:Article
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URLURL TypeDescription
Kelzenberg, Michael D.0000-0002-6249-2827
Filler, Michael A.0000-0003-4239-8558
Lewis, Nathan S.0000-0001-5245-0538
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2008 American Chemical Society. Received October 10, 2007. Publication Date (Web): February 13, 2008. This work was supported by BP and in part by the National Science Foundation under Grant DMR 0606472 and also made use of facilities supported by the Center for Science and Engineering of Materials, an NSF Materials Research Science and Engineering Center at Caltech.
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Record Number:CaltechAUTHORS:20170512-150141056
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Official Citation:Photovoltaic Measurements in Single-Nanowire Silicon Solar Cells Michael D. Kelzenberg, Daniel B. Turner-Evans, Brendan M. Kayes, Michael A. Filler, Morgan C. Putnam, Nathan S. Lewis, and Harry A. Atwater Nano Letters 2008 8 (2), 710-714 DOI: 10.1021/nl072622p
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77432
Deposited By: Tony Diaz
Deposited On:12 May 2017 22:40
Last Modified:15 Nov 2021 17:31

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