Photovoltaic measurements in single-nanowire silicon solar cells

Michael D. Kelzenberg, Daniel B. Turner-Evans, Brendan M. Kayes, Michael A. Filier, Morgan C. Putnam, Nathan S Lewis, Harry A. Atwater

Research output: Contribution to journalArticle

502 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)710-714
Number of pages5
JournalNano Letters
Volume8
Issue number2
DOIs
Publication statusPublished - Feb 2008

Fingerprint

Silicon solar cells
Nanowires
nanowires
solar cells
Solar cells
Carrier lifetime
air masses
Voltage measurement
Electric current measurement
carrier lifetime
diffusion length
minority carriers
dark current
Photocurrents
spectral sensitivity
electrical measurement
photocurrents
Nanostructures
Microscopic examination
platforms

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Kelzenberg, M. D., Turner-Evans, D. B., Kayes, B. M., Filier, M. A., Putnam, M. C., Lewis, N. S., & Atwater, H. A. (2008). Photovoltaic measurements in single-nanowire silicon solar cells. Nano Letters, 8(2), 710-714. https://doi.org/10.1021/nl072622p

Photovoltaic measurements in single-nanowire silicon solar cells. / Kelzenberg, Michael D.; Turner-Evans, Daniel B.; Kayes, Brendan M.; Filier, Michael A.; Putnam, Morgan C.; Lewis, Nathan S; Atwater, Harry A.

In: Nano Letters, Vol. 8, No. 2, 02.2008, p. 710-714.

Research output: Contribution to journalArticle

Kelzenberg, MD, Turner-Evans, DB, Kayes, BM, Filier, MA, Putnam, MC, Lewis, NS & Atwater, HA 2008, 'Photovoltaic measurements in single-nanowire silicon solar cells', Nano Letters, vol. 8, no. 2, pp. 710-714. https://doi.org/10.1021/nl072622p
Kelzenberg MD, Turner-Evans DB, Kayes BM, Filier MA, Putnam MC, Lewis NS et al. Photovoltaic measurements in single-nanowire silicon solar cells. Nano Letters. 2008 Feb;8(2):710-714. https://doi.org/10.1021/nl072622p
Kelzenberg, Michael D. ; Turner-Evans, Daniel B. ; Kayes, Brendan M. ; Filier, Michael A. ; Putnam, Morgan C. ; Lewis, Nathan S ; Atwater, Harry A. / Photovoltaic measurements in single-nanowire silicon solar cells. In: Nano Letters. 2008 ; Vol. 8, No. 2. pp. 710-714.
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