Fabrication of dye sensitized solar cell using TiO_2 coated carbon nanotubes

摘要

We fabricated a dye sensitized solar cells (DSCs) using TiO_2 coated multi-wall carbon nanotubes (TiO_2-CNTs). Carbon nanotubes (CNTs) have excellent electrical conductivity and good chemical stability. We introduced CNTs in DSCs to improve solar cell performance through reduction of series resistance. TiO_2-CNTs were obtained by Sol-Gel method. Compared with a conventional TiO_2 cell, the TiO_2-CNTs content (0.1 wt.%) cell showed ～ 50% increase in conversion efficiency, which is attributed to the increase in short circuit current density (J_(sc)). The enhancement in J_(sc) occurs due to improvement in interconnectivity between the TiO_2 particles and the TiO_2-CNTs in the porous TiO_2 film.