This invention relates to an organic compound having an amine core substituted with three aromatic rings, with some of the aromatic rings being substituted with substituents capable of liquid processing, and other aromatic rings being substituted with heteroaromatic substituents. The invention also pertains to an organic compound applied to a light-emitting layer in a light-emitting diode and a light-emitting device. By using the organic compound according to the invention in the light-emitting layer, it is possible to eliminate the HOMO energy barrier between the light-emitting layers adjacent to each other. Furthermore, when the organic compound of the invention is used in combination with light-emitting particles to form the light-emitting layer, the interfacial characteristics between the light-emitting layer and adjacent layers are improved, enhancing the morphology characteristics of the light-emitting diode. By applying the organic compound according to the invention, it is possible to achieve improved luminous efficiency and manufacture light-emitting diodes and light-emitting devices capable of low-voltage operation due to the balanced movement of holes and electrons in the light-emitting material layer.
申请人:LG Display Co.,Ltd. 엘지디스플레이 주식회사(119981018655) Corp. No ▼ 110111-0393134
公开号:KR20180044695A
公开(公告)日:2018-05-03
본 발명은, 하기 화학식으로 표시되며 열적 안정성과 삼중항 에너지가 높고 정공 이동도가 우수한 유기 화합물을 제공한다. 이와 같은 유기 화합물이 정공 수송층 및/또는 P형 전하 생성층에 이용되는 유기발광다이오드 및 유기발광표시장치는 구동 전압, 발광 효율 및 수명에서 장점을 갖는다.
High-efficiency blue phosphorescent organic light-emitting diodes using a carbazole and carboline-based host material
作者:Sun Jae Kim、Young Jae Kim、Young Hoon Son、Jung A. Hur、Hyun Ah Um、Jicheol Shin、Tae Wan Lee、Min Ju Cho、Jung Keun Kim、Sunghoon Joo、Joong Hwan Yang、Gee Sung Chae、Kihang Choi、Jang Hyuk Kwon、Dong Hoon Choi
DOI:10.1039/c3cc42569j
日期:——
A novel bipolar host 9-(4-(9H-pyrido[2,3-b]indol-9-yl)phenyl)-9H-3,9′-bicarbazole (pBCb2Cz) was prepared for high efficiency blue phosphorescent organic light-emitting diodes (PhOLEDs), a high triplet energy (ET) material, employing electron-deficient α-carboline. pBCb2Cz (ET = 2.93 eV) was effective as a host material for FIrpic- and FCNIrpic-based blue PhOLEDs, and highest quantum efficiencies of 23.0 and 16.2%, respectively, were achieved.