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Stability study of carbon-based counter electrodes in dye-sensitized solar cells

Authors
Journal
Electrochimica Acta
0013-4686
Publisher
Elsevier
Publication Date
Volume
56
Issue
24
Identifiers
DOI: 10.1016/j.electacta.2011.07.035
Keywords
  • Ti-Hydrogel
  • Carbon/Tio2Counter Electrode
  • Stability
  • Dye-Sensitized Solar Cell

Abstract

Abstract This study describes a systematic investigation of the stability of a carbon/TiO 2 counter electrode for use in dye-sensitized solar cells (DSSCs). In this system, nanoparticle additives were introduced by adding Ti-hydrogel. The additives then bound carbon particles and enhanced the adhesion of carbon materials to the conductive substrate. After introducing the Ti-hydrogel into the carbon paste, the carbon/Ti-hydrogel composited counter electrode (HC-CE) showed a better conductivity and stability compared with that of the carbon counter electrode (C-CE), while the catalytic activity was not influenced. The device based on the HC-CE showed superior power conversion efficiency (6.3%) and long-term stability over the device based on the C-CE (5.8%).

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