Impedance analysis of nanocarbon DSSC electrodes

• Published in: Superlattices and microstructures Vol. 46; no. 1; pp. 205 - 208
• Main Authors: Gagliardi, S., Giorgi, L., Giorgi, R., Lisi, N., Dikonimos Makris, Th, Salernitano, E., Rufoloni, A.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-07-2009
• Subjects: Carbon; Carbon nanostructure; Charge transfer; DSSC; Electrochemical impedance spectroscopy; Electrode materials; Electrodes; Impedance spectroscopy; Multi wall carbon nanotubes; Nanostructure; Carbon nanostructure; Impedance spectroscopy; DSSC
• ISSN: 0749-6036; 1096-3677
• DOI: 10.1016/j.spmi.2009.02.002

Carbon nanoparticles and multiwall carbon nanotubes were deposited on an Optically Transparent Electrode (OTE) for application in Dye Sensitised Solar Cells (DSSCs) as counter electrode materials. Electrochemical Impedance Spectroscopy (EIS) was used to evaluate the behaviour in a
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electrolyte solution. Results were compared to commercial Pt catalysed OTE and polycrystalline graphite. Multiwalled carbon nanotubes show low series resistance and low charge transfer resistance promising an improved fill factor (and efficiency) in DSSCs assembled with such materials as counter electrodes.