Abstract

The ZnS thin films have been successfully fabricated on the surface of TiO₂ nanoparticle electrodes via successive ionic layer adsorption and reaction method (SILAR). The thickness of ZnS coatings were controlled by varing the reaction cycles. The effect on the photovoltaic performance of the dye-sensitized solar cells (DSSCs) was systematically investigated. Electrical impedance spectroscopy (EIS) and intensity modulated photovoltaic spectroscopy were performed to analyze electronic processes. Results show that ZnS coatings have reduced the recombination rate during the electrons transportation and improved the fill factor of the DSSCs.

© 2013 Optical Society of America