Impact of the Level and Orientation of Crystallinity on Charge Transport in Semi-Crystalline Organic Semiconductors

The unique features of organic materials such as cost-efficient solution processability are accompanied by major drawbacks in terms of low charge carrier mobility. Typical organic materials which are of interest for the use in electronic devices are usually amorphous or semi-crystalline domains and exhibit a high degree of energetic and spatial disorder. We present a kinetic Monte Carlo study of the dependence of the charge transport processes on the degree of crystallinity and orientation in conjugated polymers. We implement the crystallinity using a correlation in the energetic landscape. As a test case, we consider the conjugated polymer poly(3-hexylthiophene) (P3HT).