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Red Organic Light-Emitting Diodes with a Non-doping Amorphous Red Emitter
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2002
Year
Optical MaterialsEngineeringOrganic ElectronicsLuminescent GlassOptoelectronic DevicesChemistryLuminescence PropertyOled DeviceElectronic DevicesOptical PropertiesLight-emitting DiodesMaterials ScienceElectrical EngineeringOptoelectronic MaterialsOrganic SemiconductorNew Lighting TechnologyNon-doping Red EmitterWhite OledSolid-state LightingElectronic MaterialsApplied PhysicsRed OledOptoelectronics
An OLED device containing a non-doped pure red light-emitting layer has been achieved. The red OLED is not only bright (∼ 8000 cd/m2) and efficient (2.4 % of external quantum efficiency) but it can also be fabricated easily without concentration-quenching problems. The Figure shows the structure of the non-doping red emitter, which is an amorphous glass molecular material with Tg ∼ 120 °C.