Directional Crystallization of Conjugated Molecules during Coating Processes

The coating of organic molecules from the solution phase can result in directional crystal growth under certain conditions, even on a smooth isotropic surface and without the need of any kind of graphoexpitaxial preparation of the substrate. Based on reviewing the results from a variety of coating techniques and coating parameters, we identified that it is crucial for the coating speed to match the growth speed of the fastest growing crystal plane to achieve a high degree of directional crystallization.

Automated summary

Coating organic molecules can lead to directional crystal growth under certain conditions, even without substrate preparation. Matching the coating speed with the growth speed of the fastest growing crystal plane is crucial for achieving a high degree of directional crystallization.