Adsorption density control of N719 on TiO2 electrodes for highly efficient dye-sensitized solar cells

Fumihiko Hirose; Koei Kuribayashi; Masaya Shikaku; Yuzuru Narita; Yutaka Takahashi; Yasuo Kimura; Michio Niwano

doi:10.1149/1.3155425

Adsorption density control of N719 on TiO₂ electrodes for highly efficient dye-sensitized solar cells

Fumihiko Hirose, Koei Kuribayashi, Masaya Shikaku, Yuzuru Narita, Yutaka Takahashi, Yasuo Kimura, Michio Niwano

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25 Citations (Scopus)

Abstract

N719 dye adsorption on anatase TiO₂ surfaces with different adsorption densities was investigated by IR-absorption spectroscopy using a multiple internal reflection technique. When the N719 dye was adsorbed on the Ti O₂ surface by immersing it in an N719 solution consisting of acetonitrile and tertiary-butyl alcohol, chemisorbed and physisorbed N719 dyes coexisted on the surface. The ratio of chemisorbed and physisorbed dye densities was dependent on the N719 exposure, and excessive exposure led to the generation of the physisorbed dye. Test fabrications of the dye-sensitized solar cells (DSCs) with various N719 exposures suggested that we need to optimize the dye adsorption density to achieve a higher power conversion efficiency in DSCs.

Original language	English
Journal	Journal of the Electrochemical Society
Volume	156
Issue number	9
DOIs	https://doi.org/10.1149/1.3155425
Publication status	Published - 2009 Aug 7

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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Hirose, F., Kuribayashi, K., Shikaku, M., Narita, Y., Takahashi, Y., Kimura, Y., & Niwano, M. (2009). Adsorption density control of N719 on TiO₂ electrodes for highly efficient dye-sensitized solar cells. Journal of the Electrochemical Society, 156(9). https://doi.org/10.1149/1.3155425

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abstract = "N719 dye adsorption on anatase TiO2 surfaces with different adsorption densities was investigated by IR-absorption spectroscopy using a multiple internal reflection technique. When the N719 dye was adsorbed on the Ti O2 surface by immersing it in an N719 solution consisting of acetonitrile and tertiary-butyl alcohol, chemisorbed and physisorbed N719 dyes coexisted on the surface. The ratio of chemisorbed and physisorbed dye densities was dependent on the N719 exposure, and excessive exposure led to the generation of the physisorbed dye. Test fabrications of the dye-sensitized solar cells (DSCs) with various N719 exposures suggested that we need to optimize the dye adsorption density to achieve a higher power conversion efficiency in DSCs.",

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AU - Hirose, Fumihiko

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AU - Narita, Yuzuru

AU - Takahashi, Yutaka

AU - Kimura, Yasuo

AU - Niwano, Michio

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