We have fabricated and characterized heterojunction electroluminescent devices with the structure of ITO-coated glass/tetracene/(DCM-doped)Alq 3/Li:Al. The organic thin films of tetracene, Alq3, and dye dopant DCM were deposited by applying the cluster beam deposition (CBD) methods. X-ray diffraction (XRD) and atomic force microscopy (AFM) measurements show that the flat and smooth thin tetracene films are close to a highly ordered, single crystal. Photoluminescence (PL), electroluminescence (EL) and device characteristics such as current density-voltage (J - V), EL intensity-voltage (L - V), and external quantum efficiency-current (EQE-I) were examined for undoped and DCM-doped devices.
- Cluster beam deposition
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
- Polymers and Plastics