Abstract
In this article, white-light-emitting EL devices and polymer-based EL devices will be reported. Several white EL devices having different device architectures are discussed. Materials used for white EL devices include small molecules as well as polymers. In cases of small molecules, white light is generated by stacking several organic layers with different emission colors. In contrast, several fluorescent dyes are doped into a polymer emitter layer in case of polymer-based white EL devices. Three kinds of multicolor devices are introduced, which include white EL devices with color filters. Other multicolor devices are so-called “side-by-side” structure and blue EL with color conversion layers. Novel methods for the fabrication of side-by-side devices using polymers are also introduced.
