Patent ID: 8883323
Filing Date: 2014-11-11
Classification: H01L,Y10S

Abstract:
1. An organic electroluminescence device, comprising in sequential order an anode, an emitting layer, a blocking layer, an electron injecting layer, and a cathode, wherein the emitting layer comprises a host and a dopant, the blocking layer comprises an aromatic heterocyclic derivative, a triplet energy E the triplet energy E an affinity A wherein the aromatic heterocyclic derivative is represented by formula (BL-6) wherein F at least one of F R is independently selected from the group consisting of a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, and a combination thereof, when a plurality of F m is an integer of 0 to 13, n is an integer of 1 to 6, when n is 1, R′ is independently selected from the group consisting of a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, and a combination thereof, when n is 2 to 6, R′ is a linking group independently selected from the group consisting of a substituted or unsubstituted alkylene group, a substituted or unsubstituted arylene group, a substituted or unsubstituted heteroarylene group, and a combination thereof, or R′ is a single bond that directly bonds two F