Hi all,
It is well known that poly(3-hexyl thiophene) and other conductive polymers with alkyl substituents align when deposited on a surface (e.g. by spin coating or drop casting). The common orientations for P3HT on silicon/silicon dioxide are "edge-on" in which the alkyl side-chains point...
It will be difficult to determine the structure in your thin film using the standard Bragg-Brentano geometry for the following reasons:
1) This scattering geometry will only probe the electron density normal to the surface, i.e., you will only see diffraction from lattice planes (roughly)...