Abstract
Several methods for physical vapor deposition of polymer thin films have been reviewed with an emphasis on its application to organic light-emitting devices. Codepositon method of two bifunctional monomers can produce such films as polyimide, polyurea, polyurethane, and π-conjugated polymers. Radical polymerization of single monomer can be achieved by electron-assisted vapor deposition of vinyl and acryl monomers. Surface-initiated deposition polymerization combines a self-assembled monolayer with the vapor deposition to grow polymer thin films that are chemically bound to the substrate surface. Patterned polymer thin films can be prepared by depositing photosensitive films consisting of functional monomers and photoinitiators. These methods are capable of preparing nanometer-thick polymer thin films and their multilayers, and are suitable for device fabrication. It was shown that the lifetime of organic light-emitting device can be extended by using the vapor deposition polymerization.
