Improved photon-to-current conversion efficiency with a nanoporous p-type NiO electrode by the use of a sensitizer-acceptor dyad

Ana Morandeira, Jérôme Fortage, Tomas Edvinsson, Loïc Le Pleux, Errol Blart, Gerrit Boschloo, Anders Hagfeldt, Leif Hammarström, Fabrice Odobel

Research output: Contribution to journalArticle

148 Citations (Scopus)

Abstract

A peryleneimide sensitizer and a covalently linked peryleneimide- naphthalenediimide dyad were prepared and characterized by absorption and emission spectroscopies, electrochemistry, and spectroelectrochemistry. These compounds were chemisorbed on nanoporous nickel oxide electrodes and then studied by femtosecond transient absorption spectroscopy in the presence of a redox active electrolyte (I3 -/I-). In both compounds, upon excitation of the peryleneimide unit, an electron is efficiently ejected from the valence band of NiO to the dye with an average time constant of approximately 0.5 ps. In the case of the dyad, the excess electron is shifted further onto the naphtalenediimide unit, creating a new charge separated state. The latter exhibits a substantial retardation of the charge recombination between the hole and the reduced molecule compared with the peryleneimide sensitizer. The photoaction spectra of a sandwich dye-sensitized solar cell (DSSC) composed of NiO films and these new dyes were recorded, and the absorbed-photon to current conversion efficiency (APCE) was three times higher with the dyad than with the peryleneimide dye: 45%. The maximum APCE of approximately 45% is the highest value reported for a DSSC based on a nanostructured metal oxide p-type semiconductor.

Original languageEnglish
Pages (from-to)1721-1728
Number of pages8
JournalJournal of Physical Chemistry C
Volume112
Issue number5
DOIs
Publication statusPublished - Feb 7 2008

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Conversion efficiency
Coloring Agents
Photons
Dyes
dyes
Absorption spectroscopy
Electrodes
electrodes
photons
Spectroelectrochemistry
Nickel oxide
Electrons
Emission spectroscopy
Electrochemistry
Valence bands
absorption spectroscopy
Oxides
Electrolytes
solar cells
Metals

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Morandeira, A., Fortage, J., Edvinsson, T., Pleux, L. L., Blart, E., Boschloo, G., ... Odobel, F. (2008). Improved photon-to-current conversion efficiency with a nanoporous p-type NiO electrode by the use of a sensitizer-acceptor dyad. Journal of Physical Chemistry C, 112(5), 1721-1728. https://doi.org/10.1021/jp077446n

Improved photon-to-current conversion efficiency with a nanoporous p-type NiO electrode by the use of a sensitizer-acceptor dyad. / Morandeira, Ana; Fortage, Jérôme; Edvinsson, Tomas; Pleux, Loïc Le; Blart, Errol; Boschloo, Gerrit; Hagfeldt, Anders; Hammarström, Leif; Odobel, Fabrice.

In: Journal of Physical Chemistry C, Vol. 112, No. 5, 07.02.2008, p. 1721-1728.

Research output: Contribution to journalArticle

Morandeira, A, Fortage, J, Edvinsson, T, Pleux, LL, Blart, E, Boschloo, G, Hagfeldt, A, Hammarström, L & Odobel, F 2008, 'Improved photon-to-current conversion efficiency with a nanoporous p-type NiO electrode by the use of a sensitizer-acceptor dyad', Journal of Physical Chemistry C, vol. 112, no. 5, pp. 1721-1728. https://doi.org/10.1021/jp077446n
Morandeira, Ana ; Fortage, Jérôme ; Edvinsson, Tomas ; Pleux, Loïc Le ; Blart, Errol ; Boschloo, Gerrit ; Hagfeldt, Anders ; Hammarström, Leif ; Odobel, Fabrice. / Improved photon-to-current conversion efficiency with a nanoporous p-type NiO electrode by the use of a sensitizer-acceptor dyad. In: Journal of Physical Chemistry C. 2008 ; Vol. 112, No. 5. pp. 1721-1728.
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