Small polaron model of the electron motion in organic molecular crystals

The electron mobility in organic molecular crystals, in particular in anthracene, is calculated applying the small polaron model. The fluctuations of the electron polarization energy are considered as the electron‐phonon interaction. The mobility is calculated in two ways, in the first the electron‐hole correlation is neglected. It is shown that the effect of the electron‐hole correlation is to increase the mobility by about 80%. The calculated and experimental mobility values are compared.