Influence of Particle Coordination Number in Nanoporous TiO2 Films on the Performance of Dye-Sensitized Solar Cell Modules

The average particle coordination number, one of the characters concerning the pore size distribution in the films,was introduced in dye-sensitized solar cell (DSC) modules with the size of 15cm ~ 20cm and the active area of187.2cm^2 to estimate the performance of a Ti02 nanoporous film, which is critical to the future DSC production.The current-voltage measurement of the DSC modules indicates that the average particle coordination number in the range of 4-5 typically appears in nanocrystalline Ti02 films used in the DSC modules and that the average coordination number could provide a very valuable way to evaluate the performance of nanoporous Ti02 films.