| 摘要 |
The present invention provides a light emitting element which includes an electron transporting layer and a hole transporting layer between an anode and a cathode, and a first layer and a second layer between the electron transporting layer and the hole transporting layer, wherein the first layer includes a first organic compound and an organic compound having a hole transporting property, the second layer includes a second organic compound and an organic compound having an electron transporting property, the first layer is formed in contact with the anode side of the second layer, the first organic compound and the second organic compound are the same compound, and at least one of either the organic compound having a hole transporting property and the organic compound having an electron transporting property is a high molecular compound. |
| 主权项 |
1. A light emitting device comprising:
an anode; a light emitting layer over the anode, the light emitting layer comprising:
a first layer; anda second layer over the first layer; and a cathode over the second layer, wherein the first layer includes a first organic compound and a polymer having a hole transporting property, wherein the second layer includes a second organic compound and an organic compound having an electron transporting property, wherein the first organic compound and the second organic compound are the same as each other and are selected from 4-(9H-carbazol-9-yl)-4′-(10-phenyl-9-anthryl)triphenylamine,4,4′-(2-tert-butylanthracen-9,10-diyl)bis{N-[4-(9H-carbazol-9-yl)phenyl]-N-phenylaniline}, N,9-diphenyl-N-[4-(10-phenyl-9-anthryl)phenyl]-9H-carbazol-3-amine,N,N″-(2-tert-butylanthracene-9,10-diyldi-4,1-phenylene)bis[N,N′,N′-triphenyl-1,4-phenylenediamine],N,N′-bis[4-(9H-carbazol-9-yl)phenyl]-N,N′-diphenylstilbene-4,4′-diamine, N-[4-(9H-carbazol-9-yl)phenyl]-N-phenylstilbene-4-amine, and N,N′-diphenyl-N,N′-bis(9-phenylcarbazol-3-yl)stilbene-4,4′-diamine. |
