- ORGANIC COMPOUNDS AND ORGANIC ELECTRO LUMINESCENCE DEVICE COMPRISING THE SAME
-
The present invention relates to a novel compound and an organic electroluminescent device comprising the same. The compound according to the present invention is used in an organic layer, preferably a light emitting layer of an organic electroluminescent device, thereby improving light emitting efficiency, driving voltage, lifespan, and the like of the organic electroluminescent device.
- -
-
Paragraph 0137-0143
(2021/07/13)
-
- Terpyridine derivative and preparation method and application thereof as well as device
-
The invention belongs to the field of application science and technology of organic photoelectric materials, and particularly relates to a terpyridine derivative and a preparation method and application thereof as well as a device. The derivative provided by the invention is characterized by being mainly based on a terpyridine core, peripherally using a carbazole derivative and the like to regulate appropriate electron donating ability, and transforming different bridging groups through a D-A structure design to regulate the appropriate distribution of highest occupied molecular orbital (HOMO)and lowest unoccupied molecular orbital (LUMO); the derivative is mainly applied to TADF guest materials, host materials and carrier transport materials.
- -
-
Paragraph 0072-0075
(2019/07/04)
-
- To improve the efficiency of thermally activated delayed fluorescence OLEDs by controlling the horizontal orientation through optimizing stereoscopic and linear structures of indolocarbazole isomers
-
Molecular structures play a critical role in forming the horizontal orientation of the emission transition dipole of light-emitting TADF materials which can improve the light outcoupling efficiency of OLEDs. Here, two TADF emitters of IndCzpTr-1 and IndCzpTr-2 based indolocarbazole derivatives with stereoscopic and linear structures were designed and synthesized. With a smaller ΔEST, better thermal stability and preferential horizontal orientation with an orientation order parameter S of -0.264, a green TADF OLED device based on IndCzpTr-2 realized a maximum EQE of 30.0% and maximum current efficiency (CE) of 82.6 cd A-1 without using any optical outcoupling technology; meanwhile, a sky-blue TADF OLED with a maximum EQE of 14.5% and a maximum CE of 28.1 cd A-1 was obtained for IndCzpTr-1 with a homologous device structure.
- Xiang, Songpo,Lv, Xialei,Sun, Shuaiqiang,Zhang, Qing,Huang, Zhi,Guo, Runda,Gu, Honggang,Liu, Shiyuan,Wang, Lei
-
p. 5812 - 5820
(2018/06/07)
-
- Compound adopting dimethylanthrone as core, and application thereof in organic electroluminescent devices
-
The invention discloses a compound adopting dimethylanthrone as a core, and an application thereof in organic electroluminescent devices. The compound adopting the dimethylanthrone as the core and heteroarylcarbazole as a branched chain has the characteristics of difficulty in intermolecular crystallization, difficulty in aggregation and good electrochemical stability. When the compound is used as the luminescent layer material of the organic electroluminescent devices, the current efficiency of the devices is greatly improved, and the life of the devices is obviously prolonged.
- -
-
Paragraph 0046; 0047
(2017/12/09)
-
- NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
-
Organic electroluminescent compounds comprising a triphenylene conjugated to a five-ring fused heterocyclic system, as depicted in formula 1 are provided. Also provided is an organic electroluminescent device comprising these compounds. The organic electroluminescent compounds disclosed herein exhibit good luminous efficiency and excellent material life. They can be used to manufacture OLED devices very superior in terms of operating life and which consume less power due to improved power efficiency.
- -
-
-
- NOVEL COMPOUNDS FOR ORGANIC ELECTRONIC MATERIAL AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
-
The present invention relates to a novel compound and an organic electroluminescent device containing the same. Since the compounds according to the present invention have high efficiency in transporting electrons, crystallization could be prevented when manufacturing a device. Further, the compounds have good layer formability and improve the current characteristic of the device. Therefore, they can produce an organic electroluminescent device having lowered driving voltages and enhanced power efficiency.
- -
-
-