I need some help with something I've been unable to figure out. Both P3HT and PCBM do have a semicrystalline nature. However, which of these material has the biggest change in density (that is, the largest molecular packing factor) between their amorphous and crystalline phase?
I've done quite some research on the topic, and I have a hard time believing the answers isn't out there, but I just can't find it. This paper seems like they are touching the subject, but as far as I can read they are only looking the at domain sizes and not the crystal structure between the phases:
Dynamics of Crystallization and Disorder during Annealing of P3HT/PCBM Bulk Heterojunctions [PDF]
All help will be greatly appreciated.
