Influence of Acetic Acid on the Photovoltaic Performance of Ru(II) Dye Sensitized Nanocrystalline Tio2 Solar Cells
نویسندگان
چکیده
In the photoelectrode, the important factor to achieve high efficiency of DSSC is weak acid treatment rather than specific regime of heat treatment. Acid treated paste of titanium oxide nano particles enhanced a factor of three higher of the energy conversion efficiency(none (η=2.0%), H2SO4(η=1.7%), HCl(η=2.8%), CH3COOH(η=6.2%) in dye-sensitized solar cells (DSSCs). The effects of the different concentrations were investigated. To anal size the results, the chemical reaction schemes with XPS, scanning electron microscopy, attenuated total reflection Fourier transform infrared spectroscopy, current density-voltage property and power conversion efficiency of the DSSCs were introduced. Acetic acid treatment is advantageous for the adsorption to molecules and enhancement of the photoelectric performance of DSSC. It was found that DSSC showed better photovoltaic performance when the TiO2 paste was treated by acids. The acid treatment of TiO2 electrode provides useful information to understand the mechanism of energy conversion of DSSC.
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