High quantum yield sensitization of nanocrystalline titanium dioxide photoelectrodes with cis-dicyanobis(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) or tris(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) complexes

Geneviève Sauvé; Marion E. Cass; Stephen J. Doig; Iver Lauermann; Katherine Pomykal; Nathan S. Lewis

doi:10.1021/jp994033g

High quantum yield sensitization of nanocrystalline titanium dioxide photoelectrodes with cis-dicyanobis(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) or tris(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) complexes

Geneviève Sauvé, Marion E. Cass, Stephen J. Doig, Iver Lauermann, Katherine Pomykal, Nathan S. Lewis

California Institute of Technology

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

Abstract

Osmium polypyridyl complexes were used as sensitizers in solar cells that utilize nanocrystalline titanium dioxide photoelectrodes. Exposure of TiO₂ electrodes to sources of Os^II(H₂L′)₂(CN)2 (where L′ is 4,4′-dicarboxylato-2,2′-bipyridine) or Os^II(H₂L′)3²⁺ extended the light absorption and spectral response of the cell to longer wavelengths than did exposure of TiO₂ to Ru(H₂L′)₂(NCS)₂. The Os complexes also provided very high external quantum yields for photocurrent flow and produced open-circuit voltages similar to those of the Ru complex. The Os-based systems therefore offer promise in developing efficient dye-sensitized nanocrystalline TiO₂-based photoelectrochemical cells.

Original language	English
Pages (from-to)	3488-3491
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	104
Issue number	15
DOIs	https://doi.org/10.1021/jp994033g
Publication status	Published - Apr 20 2000

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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Sauvé, G., Cass, M. E., Doig, S. J., Lauermann, I., Pomykal, K., & Lewis, N. S. (2000). High quantum yield sensitization of nanocrystalline titanium dioxide photoelectrodes with cis-dicyanobis(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) or tris(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) complexes. Journal of Physical Chemistry B, 104(15), 3488-3491. https://doi.org/10.1021/jp994033g

High quantum yield sensitization of nanocrystalline titanium dioxide photoelectrodes with cis-dicyanobis(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) or tris(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) complexes. / Sauvé, Geneviève; Cass, Marion E.; Doig, Stephen J.; Lauermann, Iver; Pomykal, Katherine; Lewis, Nathan S.

In: Journal of Physical Chemistry B, Vol. 104, No. 15, 20.04.2000, p. 3488-3491.

Research output: Contribution to journal › Article › peer-review

Sauvé, G, Cass, ME, Doig, SJ, Lauermann, I, Pomykal, K & Lewis, NS 2000, 'High quantum yield sensitization of nanocrystalline titanium dioxide photoelectrodes with cis-dicyanobis(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) or tris(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) complexes', Journal of Physical Chemistry B, vol. 104, no. 15, pp. 3488-3491. https://doi.org/10.1021/jp994033g

Sauvé G, Cass ME, Doig SJ, Lauermann I, Pomykal K, Lewis NS. High quantum yield sensitization of nanocrystalline titanium dioxide photoelectrodes with cis-dicyanobis(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) or tris(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) complexes. Journal of Physical Chemistry B. 2000 Apr 20;104(15):3488-3491. https://doi.org/10.1021/jp994033g

Sauvé, Geneviève ; Cass, Marion E. ; Doig, Stephen J. ; Lauermann, Iver ; Pomykal, Katherine ; Lewis, Nathan S. / High quantum yield sensitization of nanocrystalline titanium dioxide photoelectrodes with cis-dicyanobis(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) or tris(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) complexes. In: Journal of Physical Chemistry B. 2000 ; Vol. 104, No. 15. pp. 3488-3491.

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abstract = "Osmium polypyridyl complexes were used as sensitizers in solar cells that utilize nanocrystalline titanium dioxide photoelectrodes. Exposure of TiO2 electrodes to sources of OsII(H2L′)2(CN)2 (where L′ is 4,4′-dicarboxylato-2,2′-bipyridine) or OsII(H2L′)32+ extended the light absorption and spectral response of the cell to longer wavelengths than did exposure of TiO2 to Ru(H2L′)2(NCS)2. The Os complexes also provided very high external quantum yields for photocurrent flow and produced open-circuit voltages similar to those of the Ru complex. The Os-based systems therefore offer promise in developing efficient dye-sensitized nanocrystalline TiO2-based photoelectrochemical cells.",

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AB - Osmium polypyridyl complexes were used as sensitizers in solar cells that utilize nanocrystalline titanium dioxide photoelectrodes. Exposure of TiO2 electrodes to sources of OsII(H2L′)2(CN)2 (where L′ is 4,4′-dicarboxylato-2,2′-bipyridine) or OsII(H2L′)32+ extended the light absorption and spectral response of the cell to longer wavelengths than did exposure of TiO2 to Ru(H2L′)2(NCS)2. The Os complexes also provided very high external quantum yields for photocurrent flow and produced open-circuit voltages similar to those of the Ru complex. The Os-based systems therefore offer promise in developing efficient dye-sensitized nanocrystalline TiO2-based photoelectrochemical cells.

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High quantum yield sensitization of nanocrystalline titanium dioxide photoelectrodes with cis-dicyanobis(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) or tris(4,4′-dicarboxy-2,2′-bipyridine)osmium(II) complexes

Abstract

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