Advertisement

Organic Dye-Sensitized Ionic Liquid Based Solar Cells: Remarkable Enhancement in Performance through Molecular Design of Indoline Sensitizers

Authors

  • Daibin Kuang Dr.,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, Fax: (+41) 21-693-6100
    Search for more papers by this author
  • Satoshi Uchida Prof.,

    1. Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, 4-6-1, Komaba, Meguro, Tokyo 1534-8904, Japan
    Search for more papers by this author
  • Robin Humphry-Baker Dr.,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, Fax: (+41) 21-693-6100
    Search for more papers by this author
  • Shaik M. Zakeeruddin Dr.,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, Fax: (+41) 21-693-6100
    Search for more papers by this author
  • Michael Grätzel Prof.

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland, Fax: (+41) 21-693-6100
    Search for more papers by this author

  • We are grateful to Dr. C. Grätzel and Z. Zhang for helpful discussion, P. Comte for TiO2 film fabrication, and R. T. Koyanagi (CCIC (Japan)) for providing the 400-nm-sized TiO2 particles. We gratefully acknowledge the Swiss National Science Foundation for financial support.

Abstract

original image

A power conversion efficiency of more than 7.2 % under AM 1.5 sunlight (100 mW cm−2) is reported for the first time for an organic-dye-sensitized solar cell used in conjunction with a newly developed binary ionic-liquid (solvent-free) electrolyte (see current–voltage plot and photocurrent action spectrum for the sensitizer D205, the highest occupied molecular orbital of which is shown).

Ancillary