Abstract
This study attempts to enhance the performance of dye-sensitized solar cells (DSSCs) by integrating TiCl 4 treatment on porous TiO 2 and the Ti-deposited thin film metal on FTO. The electron conductance of the interface between the FTO glass and the electron transport on the porous TiO 2 film can be improved by sputtering the Ti interfacial layer. The modified DSSCs achieve significantly better short-circuit photocurrent density (J sc ), approximately 42% greater than that of the standard cell. This ultimately produces a 6.13% energy conversion efficiency (η), which is approximately 33% higher than that of a standard cell. The incident monochromatic photon-to-current conversion efficiency (IPCE) spectra of the modified DSSCs show a higher value than that of a standard cell, especially in the higher wavelength range. © 2012 by ESG.