Growth and characterization of vacuum-deposited polyvinylcarbazole (PVK) films

The optical and infrared absorption spectra of polyvinylcarbazole (PVK) films deposited by vacuum evaporation show identical shape when compared with the corresponding spectra of solution-grown PVK films obtained by thermal evaporation of the solution of PVK and dichloromethane. This confirms the formation of PVK films on vacuum deposition. Electron spectroscopy for chemical analysis measurements indicate the presence of carbon and nitrogen in these films as expected from the structure of PVK. The scanning electron micrographs indicate that the surface of these vacuum-deposited films are quite smooth and remain so even after annealing them in the atmosphere at 373 K for 1 h.