Ni(III)/(IV) Bis(dicarbollide) as a fast, noncorrosive redox shuttle for dye-sensitized solar cells

Tina C. Li, Alexander M. Spokoyny, Chunxing She, Omar K. Farha, Chad A. Mirkin, Tobin J Marks, Joseph T Hupp

Research output: Contribution to journalArticle

144 Citations (Scopus)

Abstract

Nickel bis(dicarbollide) is used as a fast, one-electron outer sphere redox couple in dye-sensitized solar cells. Device performances with this anionic shuttle are investigated with different electrolyte concentrations and additives, using only 0.030 M of the Ni(III) bis(dicarbollide) to efficiently regenerate the ruthenium dye. Atomic layer deposition of Al2O 3 on the nanoparticulate TiO2 photoanodes is further used to improve device performances, increasing current densities almost 2-fold and attaining power conversion efficiencies 10× greater than its metallocene analogue, ferrocene/ferrocenium. Open-circuit voltage decay is used to probe the kinetics of the Ni(III)/(IV) bis(dicarbollide) redox couple, and electron interception is found to be 103 slower than ferrocene/ferrocenium, explaining the large discrepancy in open-circuit voltage potentials between these two redox shuttles.

Original languageEnglish
Pages (from-to)4580-4582
Number of pages3
JournalJournal of the American Chemical Society
Volume132
Issue number13
DOIs
Publication statusPublished - Apr 7 2010

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Oxidation-Reduction
Coloring Agents
Open circuit voltage
Electrons
Equipment and Supplies
Ruthenium
Atomic layer deposition
Nickel
Electrolytes
Conversion efficiency
Current density
Dyes
Kinetics
Dye-sensitized solar cells
ferrocenium
ferrocene
metallocene

ASJC Scopus subject areas

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

Cite this

Ni(III)/(IV) Bis(dicarbollide) as a fast, noncorrosive redox shuttle for dye-sensitized solar cells. / Li, Tina C.; Spokoyny, Alexander M.; She, Chunxing; Farha, Omar K.; Mirkin, Chad A.; Marks, Tobin J; Hupp, Joseph T.

In: Journal of the American Chemical Society, Vol. 132, No. 13, 07.04.2010, p. 4580-4582.

Research output: Contribution to journalArticle

Li, Tina C. ; Spokoyny, Alexander M. ; She, Chunxing ; Farha, Omar K. ; Mirkin, Chad A. ; Marks, Tobin J ; Hupp, Joseph T. / Ni(III)/(IV) Bis(dicarbollide) as a fast, noncorrosive redox shuttle for dye-sensitized solar cells. In: Journal of the American Chemical Society. 2010 ; Vol. 132, No. 13. pp. 4580-4582.
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AU - She, Chunxing

AU - Farha, Omar K.

AU - Mirkin, Chad A.

AU - Marks, Tobin J

AU - Hupp, Joseph T

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