Patent ID: 8901539
Filing Date: 2014-12-02
Classification: H01L

Abstract:
1. An organic EL device comprising a pair of electrodes, and a first luminescent layer and a second luminescent layer adjacent to each other and located between the pair of electrodes, the first luminescent layer comprising, in one layer, a blue phosphorescent material having a luminescence peak in a range of from 420 nm to less than 500 nm and a charge-transporting material having a lowest excited triplet energy level (T the second luminescent layer comprising, in one layer, a green phosphorescent material having a luminescence peak in a range of from 500 nm to less than 570 nm and a red phosphorescent material having a luminescence peak in a range of from 570 nm to 650 nm, each of which is mixed within the entire second luminescent layer; and the T