On the methods of calculation of the charge collection efficiency of dye sensitized solar cells

The charge collection efficiency is one of the most critical parameters of photovoltaic devices. In this paper we provide the analysis and comparison between several approaches for the calculation of the collection efficiency of dye-sensitized solar cells. In addition, we point out that although it is reasonable to correlate transit time and recombination lifetime with respect to diffusion length, it is less physical to directly calculate collection efficiency only based on characteristic time constants.