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Issue 5, 2010
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Retardation of electron injection at NiO/dye/electrolyte interface by aluminium alkoxide treatment

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Abstract

In order to retard geminate recombination in dye sensitized p-type NiO solar cells, surface treatment by aluminium alkoxide to form a thin insulating layer was applied. Open circuit voltage, short circuit current density, and energy conversion efficiency of the cell were increased by the treatment. The incident photon to current conversion efficiency (IPCE) of the light absorption wavelength of sensitizer was increased by 40% while that at the wavelength of direct excitation of NiO was reduced. The result suggests the electron injection of surface adsorbed dye was reduced more than the desired hole injection from the dye.

Graphical abstract: Retardation of electron injection at NiO/dye/electrolyte interface by aluminium alkoxide treatment

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Publication details

The article was received on 28 Sep 2009, accepted on 04 Dec 2009 and first published on 04 Feb 2010


Article type: Paper
DOI: 10.1039/B920083E
Citation: Energy Environ. Sci., 2010,3, 641-644
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    Retardation of electron injection at NiO/dye/electrolyte interface by aluminium alkoxide treatment

    S. Uehara, S. Sumikura, E. Suzuki and S. Mori, Energy Environ. Sci., 2010, 3, 641
    DOI: 10.1039/B920083E

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