Patent ID: 8911884
Filing Date: 2014-12-16
Classification: H01L,Y02E,Y02P,Y10S,Y10T

Abstract:
1. An organic light emitting device comprising: a substrate; a first electrode; a second electrode; and an organic layer comprising an emission layer between the first electrode and the second electrode, and a first intermediate layer, a second intermediate layer and a third intermediate layer interposed between the first electrode and the emission layer, wherein the first electrode, the first intermediate layer, the second intermediate layer, the third intermediate layer, and the emission layer are sequentially stacked in this order; and the first intermediate layer comprising a first host material and a first dopant material, the second intermediate layer consisting of the first dopant material, and the third intermediate layer comprising a second host material and the first dopant material; and the first dopant material is a C a highest occupied molecular orbital (HOMO) level of each of the first host material and the second host material is in a range of −5.5±1.0 eV; and a lowest unoccupied molecular orbital (LUMO) level of the first dopant material is in a range of −5.5±1.0 eV.