ABSTRACT
In recent years, organic electroluminescent diodes have become research hotspots due to their advantages of self-luminescence, fast response, ultrathin, and bendable features, which will have a significant impact on the future information technology and industry. Compared with inorganic materials, organic light-emitting materials have a wider range of light-emitting colors due to their diverse compounds and flexible molecular design. In this chapter, the organic/polymer electroluminescent materials, device structure, device physical mechanism, and thin film fabrication technology are introduced in detail. In materials, the typical structure of luminescent materials is mainly introduced, including fluorescent materials, phosphorescent materials, and all fully organic high-efficiency luminescent materials; in device structure, the multilayer structure and the function of each layer are mainly introduced; in device physics, the processes of carrier injection, transportation, and recombination are mainly introduced; in film fabrication process, the vacuum evaporation method and solution process are mainly introduced for display and lighting applications. For the realization of high-efficiency electroluminescent devices, the light out-coupling principle and method are also introduced.
