Solar water splitting cells

Michael G. Walter, Emily L. Warren, James R. McKone, Shannon W. Boettcher, Qixi Mi, Elizabeth A. Santori, Nathan S Lewis

Research output: Contribution to journalArticle

4878 Citations (Scopus)

Abstract

Water splitting cells with direct semiconductor/liquid contacts are attractive because they avoid significant fabrication and systems costs involved with the use of separate electrolyzers wired to p-n junction solar cells. Another attractive advantage of photoelectrochemical water splitting directly at the semiconductor surface is the ease with which an electric field can be created at a semiconductor/liquid junction. Water splitting cells require semiconductor materials that are able to support rapid charge transfer at a semiconductor/aqueous interface, that exhibit long-term stability, and that can efficiently harvest a large portion of the solar spectrum. In contrast to the use of a single band gap configuration (S2) to split water, the use of a dual band gap (D4) water splitting cell configuration, where the electric field is generated at a semiconductor liquid junction or through a buried junction, appears to be the most efficient and robust use of complementary light absorbing materials.

Original languageEnglish
Pages (from-to)6446-6473
Number of pages28
JournalChemical Reviews
Volume110
Issue number11
DOIs
Publication statusPublished - Nov 10 2010

Fingerprint

Semiconductor materials
Water
Liquids
Energy gap
Electric fields
Contacts (fluid mechanics)
Charge transfer
Solar cells
Fabrication
Costs

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Walter, M. G., Warren, E. L., McKone, J. R., Boettcher, S. W., Mi, Q., Santori, E. A., & Lewis, N. S. (2010). Solar water splitting cells. Chemical Reviews, 110(11), 6446-6473. https://doi.org/10.1021/cr1002326

Solar water splitting cells. / Walter, Michael G.; Warren, Emily L.; McKone, James R.; Boettcher, Shannon W.; Mi, Qixi; Santori, Elizabeth A.; Lewis, Nathan S.

In: Chemical Reviews, Vol. 110, No. 11, 10.11.2010, p. 6446-6473.

Research output: Contribution to journalArticle

Walter, MG, Warren, EL, McKone, JR, Boettcher, SW, Mi, Q, Santori, EA & Lewis, NS 2010, 'Solar water splitting cells', Chemical Reviews, vol. 110, no. 11, pp. 6446-6473. https://doi.org/10.1021/cr1002326
Walter MG, Warren EL, McKone JR, Boettcher SW, Mi Q, Santori EA et al. Solar water splitting cells. Chemical Reviews. 2010 Nov 10;110(11):6446-6473. https://doi.org/10.1021/cr1002326
Walter, Michael G. ; Warren, Emily L. ; McKone, James R. ; Boettcher, Shannon W. ; Mi, Qixi ; Santori, Elizabeth A. ; Lewis, Nathan S. / Solar water splitting cells. In: Chemical Reviews. 2010 ; Vol. 110, No. 11. pp. 6446-6473.
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