The controllable synthesis of chain-like TiO 2 networks with multiwalled carbon nanotubes as templates and its application for dye-sensitized solar cells

摘要: The anatase TiO2 nanostructure with large surface area and fast photoelectron-transfer channel can be an ideal structure for the fabrication of dye-sensitized solar cell (DSSC) photoelectrode. high provide more sites dye adsorption, while enhance photogenerated electron transfer to complete circuit. In this work, chain-like networks long particulate connection have been obtained through a facile wet-chemical method using multiwalled carbon nanotubes as templates. diameter chain is ca. 15 nm its interconnection degree controlled by adjusting amount reactive reagent. DSSC based dense network photoelectrode exhibits higher conversion efficiency (6.58 %), which than that on sparse or conventional P25 nanoparticles under same conditions. This because it has fastest interfacial charge transfer, proved N2 sorption isotherms electrochemical impedance spectra.