International Journal of Electrochemical Science · 2015 · 19 citations · 14 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemistryEnergy MaterialsNanomaterialsElectrochemical CellsElectrode MaterialsPhotovoltaic DevicesPhotovoltaic MaterialsSolar Cell MaterialsSolar CellsCharge Transfer ResistanceDye-sensitized Solar CellsElectrochemical Impedance AnalysisEnergy Conversion EfficiencyFluorine-doped Tin OxideNanostructured Solar CellsPoly(3, 4-Ethylenedioxythiophene)Tin Oxide Nanomaterials
Poly(3,4-ethylenedioxythiophene) (PEDOT) films were coated on fluorine-doped tin oxide (FTO) conductive glass by electrodeposition and applied as the counter electrode (CE) in dye-sensitized solar cells (DSSCs). Scanning electron microscopy (SEM) revealed the nanofiber-like structure of the PEDOT films. The maximum energy conversion efficiency obtained from the 0.5-μm-thick PEDOT CE was 5.1%, which was almost equivalent to that of the standard Pt CE (5.2%). From electrochemical impedance spectroscopy (EIS) results, the large charge transfer resistance of direct current solar cells was attributed to the formation of unbounded PEDOT chains that minimized the I3- reduction rate.
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