Patent ID: 11897896
Assignee: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  H  Y | IPC C  H

Claim 15:
16. The electroluminescent device according to claim 13, wherein the electroluminescent device comprises a plurality of stacks disposed between the anode and the cathode, wherein the stacks comprise a first light-emitting layer and a second light-emitting layer, wherein the first stack comprises a first light-emitting layer, and the second stack comprises a second light-emitting layer, and a charge generation layer is disposed between the first stack and the second stack, wherein the charge generation layer comprises a p-type charge generation layer and an n-type charge generation layer; wherein the p-type charge generation layer comprises a compound having Formula 1′; preferably, the p-type charge generation layer may further comprises at least one hole transporting material and is formed by doping the compound with at least one hole transporting material, wherein the hole transporting material comprises a compound having a triarylamine unit, a spirobifluorene compound, a pentacene compound, an oligothiophene compound, an oligophenyl compound, an oligophenylene vinyl compound, an oligofluorene compound, a porphyrin complex or a metal phthalocyanine complex, wherein the molar doping ratio of the compound to the hole transporting material is from 10000:1 to 1:10000; preferably, the molar doping ratio of the compound to the hole transporting material is from 10:1 to 1:100.