Organic Vapor Phase Deposition for Optoelectronic Devices

The growth of molecular organic thin films by the process of organic vapor phase deposition (OVPD) was initiated by Professor Steve Forrest OVPD transports organic molecules to a cold substrate by a hot inert carrier gas. It has proven useful for the deposition of organic semiconductors, and is capable of patterned growth with micron resolution. Professors Benziger and Forrest collaborated to engineering the process for a scalable continuous process. Most recently, Profs. Forrest and Benziger have demonstrated direct printing of molecular organic materials based on a new method of growth, organic vapor jet printing (OVJP), where molecules are carried to the substrate by a hot carrier gas jet. The diameter of the deposit is limited by the gas jet dynamics and nozzle dimensions, and is capable of generating patterns ~500nm.