Earlier, we provided an overview of our implementation of mixed quantumclassical CPA-FSSH DFTB for treating CT dynamics. Here, we illustrate the CT dynamics of Phenyl-C61-butyric acid methyl ester/Polythiophene (PCBM-PT), which is a model system for understanding photo-induced charge transfer dynamics in organic photovoltaics. Figure : Variations in the energies of the LUMO to LUMO+5 orbitals (adiabatic states) of Phenyl-C61-butyric acid methyl ester/Polythiophene (PCBM-PT) system are shown for a specific nuclear trajectory. Changes in the energy of the active state for a specific FSSH trajectory are also shown. For this FSSH trajectory, the active state switches between the LUMO+3 and LUMO+4 during the first 300 fs of the simulation. Later, it switches to the LUMO+2, the LUMO+1, and finally to the LUMO. Note that, ten thousand FSSH trajectories are considered for each nuclear trajectory.