Abstract
The replacement of the expensive Pt counter electrode (CE) for solid-state dye-sensitized solar cells (ss-DSSCs) and dye-sensitized solar cells (DSSCs) is necessary to reduce cell fabrication cost. With this objective, two CE films PPy + SDS (polypyrrole + sodium dodecyl sulfate as a surfactant), and PPy + SDS + CNT (carbon nanotubes) were prepared by a simple electrochemical polymerization method. These films were effectively used as the CE in DSSCs and ss-DSSCs. Tafel curves and impedance spectroscopy data showed that the PPy + SDS + CNT has a low surface resistance, which causes excellent electrocatalytic activity in both devices. DSSCs with a PPy + SDS + CNT CE show good power conversion efficiency (PCE) compared to ss-DSSCs. Both devices show comparable PEC to the Pt counterpart, and the PPy + SDS + CNT film can be used as a CE for DSSCs and ss-DSSCs and is a viable alternative to a sputtered Pt electrode.
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Acknowledgement
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20163010012310). This work was supported by “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20174030201760).
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Lee, J.H., Jang, Y.J., Kim, D.W. et al. Application of polypyrrole/sodium dodecyl sulfate/carbon nanotube counter electrode for solid-state dye-sensitized solar cells and dye-sensitized solar cells. Chem. Pap. 73, 2749–2755 (2019). https://doi.org/10.1007/s11696-019-00827-5
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DOI: https://doi.org/10.1007/s11696-019-00827-5