論文

査読有り
2013年8月22日

X-ray characterization of dye adsorption in coadsorbed dye-sensitized solar cells

Journal of Physical Chemistry C
  • Mitsunori Honda
  • ,
  • Masatoshi Yanagida
  • ,
  • Liyuan Han
  • ,
  • Kenjiro Miyano

117
33
開始ページ
17033
終了ページ
17038
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/jp404572y

We performed X-ray measurements to elucidate the adsorption mode of N719 dye molecules on nanoporous TiO2 with and without coadsorption of D131 dye. Two techniques, X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure spectroscopy, were employed to obtain depth profile information about the substrate. In both cases, we found that the isothiocyanate groups of N719 strongly interact with TiO2 via S atoms when the dye is adsorbed from a single-component solution. In contrast, S-substrate interaction is strongly suppressed when D131 is coadsorbed with N719, indicating that the presence of D131 changes the adsorption mode of N719. On the basis of this finding, we designed a procedure to promote the preferential adsorption of D131, by which we successfully improved the short-circuit current and conversion efficiency. © 2013 American Chemical Society.

リンク情報
DOI
https://doi.org/10.1021/jp404572y
ID情報
  • DOI : 10.1021/jp404572y
  • ISSN : 1932-7447
  • ISSN : 1932-7455
  • SCOPUS ID : 84883150640

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