Charge carrier transport and energetic disorder in poly (3-hexylthiophene):methanofullerene photovoltaic blends

In this paper, the charge carrier transport and energetic disorder in photovoltaic blends of regioregular poly(3-hexylthiophene) (P3HT) and methanofullerene (PCBM) with different annealing temperatures have been studied. It is demonstrated that the current density versus voltage (J -V ) characteristics of both P3HT hole-only device and PCBM electron-only device can be accurately described by using our recently introduced improved mobility model. Furthermore, the J -V characteristics of P3HT:PCBM blends that were measured in hole-only and electron-only devices for different annealing temperatures can also be accurately described by the improved mobility model. Additionally, we find that the …