Editing Organic electronics (section)

===Fabrication methods===
Small molecule semiconductors are often [[insoluble]], necessitating [[deposition (chemistry)|deposition]] via vacuum [[sublimation (phase transition)|sublimation]]. Devices based on [[conductive polymer]]s can be prepared by solution processing methods. Both solution processing and vacuum based methods produce amorphous and [[polycrystalline]] films with variable degree of disorder. "Wet" [[coating]] techniques require polymers to be dissolved in a volatile [[solvent]], filtered and deposited onto a [[substrate (materials science)|substrate]]. Common examples of solvent-based coating techniques include drop casting, [[spin-coating]], doctor-blading, [[inkjet printing]] and [[screen printing]]. Spin-coating is a widely used technique for small area [[thin film]] production. It may result in a high degree of material loss. The doctor-blade technique results in a minimal material loss and was primarily developed for large area thin film production. Vacuum based thermal deposition of small molecules requires [[evaporation]] of molecules from a hot source. The molecules are then transported through vacuum onto a substrate. The process of condensing these molecules on the substrate surface results in thin film formation. Wet coating techniques can in some cases be applied to small molecules depending on their solubility.