Abstract
A titanium oxide (TiO2) compact layer was used to enhance the performance of a dye-sensitized solar cell (DSSC) by reducing the electrical loss from recombination at the indium tin oxide (ITO)/electrolyte interface and by improving the electrical contact between ITO and the zinc oxide (ZnO) nano-rod photoelectrode. The TiO2 compact layer was deposited on ITO glass using the liquid phase deposition (LPD) method. DSSCs fabricated with and without the LPD-TiO2 compact layer were compared. In addition, various thicknesses of the LPD-TiO2 compact layer were evaluated. The light-to-electricity conversion efficiency of the DSSC increased from 0.43 to 0.75% by incorporating the LPD-TiO2 compact layer. Experimental results demonstrated that the LPD method is a promising alternative to the conventional TiO2 compact layer technology for the production of high-performance DSSCs.
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