REVIEW OF TIO2 NANOWIRES IN DYE-SENSITIZED SOLAR CELL
Dye sensitized solar cell is an alternative option for silicon solar cell, because o f their flexibility, transparency and low cost. The need for DSSC to absorb far more o f the incident light was the driving force for the development o f mesoscopic semiconductor materials with an enormous internal surface area. The major breakthrough in DSSC was the use o f a high surface area nanoporous TiO2 layer. In order to obtain a high conversion yield in solar cells, it is necessary to collect ion carriers produced by photons as electrical current before their re-combination. The collection o f ion carriers must be carried out significantly faster than the re-combination. This review deals with 1D TiO2 nanowires with TiO2 nanoparticles with different photoanode modification technique core shell, bilayer and doping which can suppress the recombination rate and electron loss. The introduction o f such a structure can build an energy barrier at the semiconductor/electrolyte interface to retard the electron transfer to the electrolyte and reduce the density o f surface traps, which are considered to be the recombination centers.
Muthayammal College of Engineering, India
AMA College of Engineering, Tamilnadu, India