WHITE OLEDS EMPLOYING BLUE FLUORESCENT EMITTERS AND ORANGE PHOSPHORESCENT EXCIMERS

摘要

A white organic light emitting device comprises a first electrode; a hole transporting layer in contact with the first electrode; a second electrode; an electron transporting layer in contact with the second electrode; and an emissive layer between the hole transporting layer and the electron transporting layer. The emissive layer comprises a host, a fluorescent emitter, and a phosphorescent emitter. The fluorescent emitter harvests singlet excitons and emits blue light, and the phosphorescent emitter harvests triplet excitons and emits yellow-amber light.