Photoelectrochemical hydrogen evolution using Si microwire arrays

Shannon W. Boettcher, Emily L. Warren, Morgan C. Putnam, Elizabeth A. Santori, Daniel Turner-Evans, Michael D. Kelzenberg, Michael G. Walter, James R. McKone, Bruce S. Brunschwig, Harry A. Atwater, Nathan S Lewis

Research output: Contribution to journalArticle

423 Citations (Scopus)

Abstract

Arrays of B-doped p-Si microwires, diffusion-doped with P to form a radial n+ emitter and subsequently coated with a 1.5-nm-thick discontinuous film of evaporated Pt, were used as photocathodes for H2 evolution from water. These electrodes yielded thermodynamically based energy-conversion efficiencies >5% under 1 sun solar simulation, despite absorbing less than 50% of the above-band-gap incident photons. Analogous p-Si wire-array electrodes yielded efficiencies 2O junction.

Original languageEnglish
Pages (from-to)1216-1219
Number of pages4
JournalJournal of the American Chemical Society
Volume133
Issue number5
DOIs
Publication statusPublished - Feb 9 2011

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Hydrogen
Electrodes
Photocathodes
Solar System
Photons
Energy conversion
Thick films
Sun
Conversion efficiency
Energy gap
Wire
Water

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Boettcher, S. W., Warren, E. L., Putnam, M. C., Santori, E. A., Turner-Evans, D., Kelzenberg, M. D., ... Lewis, N. S. (2011). Photoelectrochemical hydrogen evolution using Si microwire arrays. Journal of the American Chemical Society, 133(5), 1216-1219. https://doi.org/10.1021/ja108801m

Photoelectrochemical hydrogen evolution using Si microwire arrays. / Boettcher, Shannon W.; Warren, Emily L.; Putnam, Morgan C.; Santori, Elizabeth A.; Turner-Evans, Daniel; Kelzenberg, Michael D.; Walter, Michael G.; McKone, James R.; Brunschwig, Bruce S.; Atwater, Harry A.; Lewis, Nathan S.

In: Journal of the American Chemical Society, Vol. 133, No. 5, 09.02.2011, p. 1216-1219.

Research output: Contribution to journalArticle

Boettcher, SW, Warren, EL, Putnam, MC, Santori, EA, Turner-Evans, D, Kelzenberg, MD, Walter, MG, McKone, JR, Brunschwig, BS, Atwater, HA & Lewis, NS 2011, 'Photoelectrochemical hydrogen evolution using Si microwire arrays', Journal of the American Chemical Society, vol. 133, no. 5, pp. 1216-1219. https://doi.org/10.1021/ja108801m
Boettcher SW, Warren EL, Putnam MC, Santori EA, Turner-Evans D, Kelzenberg MD et al. Photoelectrochemical hydrogen evolution using Si microwire arrays. Journal of the American Chemical Society. 2011 Feb 9;133(5):1216-1219. https://doi.org/10.1021/ja108801m
Boettcher, Shannon W. ; Warren, Emily L. ; Putnam, Morgan C. ; Santori, Elizabeth A. ; Turner-Evans, Daniel ; Kelzenberg, Michael D. ; Walter, Michael G. ; McKone, James R. ; Brunschwig, Bruce S. ; Atwater, Harry A. ; Lewis, Nathan S. / Photoelectrochemical hydrogen evolution using Si microwire arrays. In: Journal of the American Chemical Society. 2011 ; Vol. 133, No. 5. pp. 1216-1219.
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