  Understanding the interfacial charge-separation mechanism in organic
photovoltaics requires, due to its high level of complexity, bridging between
chemistry and physics. To elucidate the charge separation mechanism, we present
a fully quantum dynamical simulation of a generic one-dimensional Hamiltonian,
which physical parameters model prototypical PCBM or $\text{C}_{60}$ acceptor
systems. We then provide microscopic evidence of the influence random static
and dynamic potentials have on the interfacial charge-injection rate. In
particular, we unveil that dynamic potentials, due to strong electron-vibration
interactions, can lead to the formation of polaronic bands. Such dynamical
potentials, when compared to random static potentials, can provide the main
detrimental influence on the efficiency of the process of interfacial
charge-separation.
