Collection Efficiency Enhancement of Injected Electrons in Dye-sensitized Solar Cells with a Ti Interfacial Layer and TiCl₄ Treatment

摘要

This study attempts to enhance the performance of dye-sensitized solar cells (DSSCs) by integratingTiCl4 treatment on porous TiO2 and the Ti-deposited thin film metal on FTO. The electronconductance of the interface between the FTO glass and the electron transport on the porous TiO2 filmcan be improved by sputtering the Ti interfacial layer. The modified DSSCs achieve significantlybetter short-circuit photocurrent density (Jsc), approximately 42% greater than that of the standard cell.This ultimately produces a 6.13% energy conversion efficiency (), which is approximately 33%higher than that of a standard cell. The incident monochromatic photon-to-current conversionefficiency (IPCE) spectra of the modified DSSCs show a higher value than that of a standard cell,especially in the higher wavelength range.