The molecular weight (MW) of regioregular poly(3-hexyl-thiophene) (RR P3HT) has a substantial effect on the way that the chains pack on each other, and that this, in turn, causes the mobility to vary by at least four orders of magnitude. The given data does not show that disordered films are intrinsically better than highly crystalline films. Yet, it does show that factors other than crystallinity has a strong effect on mobility, and that these other factors must be considered when optimizing polymer devices.
ASJC Scopus subject areas
- Materials Science(all)