Issue 5, 2010
From the journal:

Energy & Environmental Science

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

Shusei Uehara,a   Seiichi Sumikura,a   Eiji Suzukia  and  Shogo Mori*a  

* Corresponding authors

a Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano, Japan
E-mail: shogmori@shinshu-u.ac.jp

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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Article information

DOI
https://doi.org/10.1039/B920083E
Article type
Paper
Submitted
28 Sep 2009
Accepted
04 Dec 2009
First published
04 Feb 2010

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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