Temperature dependence of P3HT:ICBA polymer solar cells

Temperature dependence of polymer solar cell with a poly (3-hexylthiophene) : indene-C60 bisadduct (P3HT:ICBA) active layer were investigated from 15°C to 50°C to evaluate their application in standard working conditions. A standard drift-diffusion model including the temperature dependent hole mobility was used as a starting point to simulate measured I-V curves. Temperature induced solar cell parameters changes indicate that there is a significant optical interference influence in the device. In order to include these effects into the simulation, a new integral absorption coefficient parameter was introduced. Simulations of experimental data were conducted for temperature dependent mobility only, and in conjunction with integral absorption coefficient. The latter simulation results are in a better agreement with the experiment.