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Influence of TiO2 Film Thickness on the Electrochemical Behaviour of Dye-Sensitized Solar Cells

机译:TiO 2 膜厚度对染料敏化太阳能电池电化学行为的影响

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A commercial TiO2 powder was deposited on F-doped SnO2 (FTO) glass substrates by a spray coatingtechnique with different thicknesses (6, 10 and 14 m) to be used as photo-anode in dye-sensitizedsolar cells (DSSCs). N3 dye was adsorbed on each TiO2 film for 16 h. The resulting electrodes wereused to form dye-sensitized solar cells in combination with conventional electrolyte and counter- electrode. The cells were investigated by I-V characteristics and electrochemical impedance spectra.The cell formed with a TiO2 film of 10 m thickness reached the best performance. This thicknessresulted as the best compromise in terms of absorption of incident light on the N3 dye, reduction of therecombination processes and suitable series and charge transfer resistance.
机译:通过喷涂技术将市售的TiO2粉末沉积在F掺杂的SnO2(FTO)玻璃基板上,该技术具有不同的厚度(6、10和14 m),用作染料敏化太阳能电池(DSSC)中的光阳极。将N3染料吸附在每个TiO2膜上16 h。将所得电极与常规电解质和反电极结合使用以形成染料敏化太阳能电池。通过I-V特性和电化学阻抗谱对电池进行了研究,以10 m厚的TiO2膜形成的电池性能最佳。该厚度是在N3染料上吸收入射光,减少重组过程以及合适的串联和电荷转移阻力方面的最佳折衷方案。

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