Indexation scheme for oriented molecular thin films studied with grazing-incidence reciprocal-space mapping

Thin films of small molecules relevant to organic electronics applications often show a confusing degree of polymorphism. An effective reciprocal-space mapping scheme has been developed in order to find and index thin-film reflections which are related to previously known molecular structures. By method of elimination, thin-film reflections due to novel thin-film phases can thus be identified.