Fabrication of organic emissive thin films by mist deposition method and evaluation of substrate temperature dependence

Mist deposition method has the advantage of low-cost and energy-saving for the fabrication of organic thin films. We fabricated thin films of organic emissive materials, tris (8-hydroxyquinoline) (Alq₃) and rhodamine 6G by the mist deposition method using ultrasonic transducer. The thicknesses of them clearly depend on the substrate temperature during the mist deposition by the boiling point of the solvent. The PL spectra clearly demonstrated that the thin films of Alq₃ and rhodamine 6G were successfully fabricated.