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The surface treatment of Ti meshes for use in large-area flexible dye-sensitized solar cells

Authors
Journal
Journal of Power Sources
0378-7753
Publisher
Elsevier
Publication Date
Volume
208
Identifiers
DOI: 10.1016/j.jpowsour.2012.02.019
Keywords
  • Platinum Counter Electrode
  • Ti Mesh
  • Naoh Hydrothermal Treatment
  • Hf Post-Treatment
  • Large Area
  • Flexible Dye-Sensitized Solar Cell
Disciplines
  • Earth Science
  • Geography

Abstract

Abstract We report that NaOH hydrothermal treatment and HF post-treatment of the titanium mesh for the Pt/Ti counter electrode improved the efficiency of dye-sensitized solar cells. High performance platinum nanoparticles have been sprayed onto Ti meshes to form counter electrodes for use in large-area flexible DSSCs using a vacuum thermal decomposition method at low temperature (120°C). The obtained Pt/Ti counter electrode shows low charge-transfer resistance (57.52Ωcm2 with active area of 80cm2) and high electrocatalytic activity for the I3−/I− redox reaction. The photovoltaic properties and resistances of Pt/Ti counter electrodes with different HF post-treatment times of the NaOH treated Ti meshes have been investigated. The efficiency of the large-area (80cm2) flexible DSSC reaches 6.17% under irradiation with a natural light intensity of 55mWcm−2 measured outdoors.

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