Electroluminescent devices

摘要

Provided is a composition for forming a light emissive layer, comprising an organic molecular light emitting material (3) and a conjugated or partially conjugated polymer, characterized in that the organic molecular light emitting material is a small molecule. Also provided is an electroluminescent device comprising: a first charge carrier injecting layer for injecting positive charge carriers; a second charge carrier injecting layer for injecting negative charge carriers; and a light emissive layer located between the charge carrier injecting layers and comprising; a first component for accepting positive charge carriers from the first charge carrier injecting layer; a second component for accepting negative charge carriers from the second charge carrier injecting layer; and a third, organic light-emissive component for generating light as a result of combination of charge carriers from the first and second components, wherein the light emissive layer comprises a composition as described above.