Review of TiO2 Nanocomposite for Dye-Sensitized Solar Cells Application

The energy demand is ever increasing to fulfill the energy requirement in this century. High energy supply is required especially in the developing countries to sustain the lifestyle due to the growth in the world's population and techno-economic city. In fact, the sources of fossil fuel based energy are limited and the use of fossil fuels can lead to the environmental pollution problem. It results in an efficient photoanode which further leads to the improvement in DSSC. The DSSCs performance is further enhanced using engineered nano-composite photoanode. The present study reviews the nano-composite based on TiO2</sub> for dye-sensitized solar cells. Nano-composite based on titanium dioxide used in dye-sensitized solar cells include TiO2</sub>/ZnO, TiO2</sub>/grapheme, TiO2</sub>/carbon and TiO2</sub>/ noble metal. Thus they result in rapid electron transfer rate, slower charge recombination rate and higher surface area.