Get access

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).

Get access to the full text of this article

Ancillary