Dye sensitized solar cells using freestanding TiO2 nanotube arrays on FTO substrate as photoanode

Front-side illuminated dye-sensitised solar cells with TiO2 nanotube arrays/fluorine doped tin oxide (FTO) glass based photoanodes were fabricated by a simple detachment and transfer method. The morphology and crystalline phase of the TiO2 nanotubes were studied by SEM and XRD. A photoconversion efficiency of 1.78% was obtained using TiO2-nanotube/FTO glass as a photoanode. The average tubes diameter increased with anodising voltage, and higher photoconversion efficiency was obtained for nanotubes synthesised at the higher voltage.