Facile synthesis of three-dimensional interweaved titania nanotape networks as dye-sensitized solar cell photoanode

• The interweaved TiO2 nanotape networks had been synthesized.
• The interweaved TiO2 nanotape networks improved light harvest efficiency.
• The photoanode for the interweaved TiO2 nanotape networks showed an improved cell efficiency.

The three-dimensional (3D) interweaved TiO2 nanotape networks have been synthesized via a facile hydrothermal method. The X-ray powder diffraction pattern indicates that the as-prepared sample is highly crystallized anatase phase. The field emission scanning electron microscopy images indicate that the as-prepared sample is highly porous and robust structure due to the formation of 3D-network among the individual TiO2 nanotape. The photovoltaic device based on the 3D interweaved TiO2 nanotape networks is fabricated and investigated. The improved device performance is obtained due to improved light scattering ability, increased connection at the TiO2/Ti interface, and enhanced amount of dye loading, as compared to the cell based on the TiO2 nanotube.