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Amorphous carbon as a flexible counter electrode for low cost and efficient dye sensitized solar cell

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  • Veerappan, Ganapathy
  • Bojan, Karunagaran
  • Rhee, Shi-Woo

Abstract

Dye sensitized solar cells (DSCs) were fabricated with carbon counter electrode deposited at low temperature. Carbon powders with an average particle size of 30–50 nm were ultrasonically dispersed in ethanol and the solution was used for spray coating onto fluorine doped tin oxide (FTO) glass substrate and also onto transparent conducting oxide coated plastic substrate at 100 °C. Thickness of the carbon electrode was controlled by varying the spray deposition time from 10 s to 420 s. Catalytic property of carbon material was measured by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The charge transfer resistance (RCT) of carbon electrode deposited for 420 s was found out to be ∼2.6 Ω cm2 in iodide/tri-iodide redox electrolyte which was similar to platinum (Pt) electrode (∼1.8 Ω cm2). Current-voltage characteristic of the DSC was measured using a solar simulator under one sun illumination (100 mW cm−2, AM 1.5). DSC with spray coated carbon counter electrode on glass and plastic showed energy conversion efficiency of more than 6.0%, which is comparable with the Pt counter electrode DSC. This optimized condition was also successfully applied with the quasi-solid electrolyte, which also illustrates promising performance.

Suggested Citation

  • Veerappan, Ganapathy & Bojan, Karunagaran & Rhee, Shi-Woo, 2012. "Amorphous carbon as a flexible counter electrode for low cost and efficient dye sensitized solar cell," Renewable Energy, Elsevier, vol. 41(C), pages 383-388.
    • Handle: RePEc:eee:renene:v:41:y:2012:i:c:p:383-388
    DOI: 10.1016/j.renene.2011.10.020
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    Cited by:

    1. Wang, Guiqiang & Wang, Delong & Kuang, Shuai & Xing, Wei & Zhuo, Shuping, 2014. "Hierarchical porous carbon derived from rice husk as a low-cost counter electrode of dye-sensitized solar cells," Renewable Energy, Elsevier, vol. 63(C), pages 708-714.
    2. Shalini, S. & Balasundara prabhu, R. & Prasanna, S. & Mallick, Tapas K. & Senthilarasu, S., 2015. "Review on natural dye sensitized solar cells: Operation, materials and methods," Renewable and Sustainable Energy Reviews, Elsevier, vol. 51(C), pages 1306-1325.
    3. Yun, Dong-Jin & Ra, Hyemin & Rhee, Shi-Woo, 2013. "Concentration effect of multiwalled carbon nanotube and poly(3, 4-ethylenedioxythiophene) polymerized with poly(4-styrenesulfonate) conjugated film on the catalytic activity for counter electrode in d," Renewable Energy, Elsevier, vol. 50(C), pages 692-700.

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