1024598-06-8Relevant articles and documents
To improve the efficiency of thermally activated delayed fluorescence OLEDs by controlling the horizontal orientation through optimizing stereoscopic and linear structures of indolocarbazole isomers
Xiang, Songpo,Lv, Xialei,Sun, Shuaiqiang,Zhang, Qing,Huang, Zhi,Guo, Runda,Gu, Honggang,Liu, Shiyuan,Wang, Lei
, p. 5812 - 5820 (2018)
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.
Organic compound as well as electronic element and device using same
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Paragraph 0028; 0235-0236; 0258, (2021/05/19)
The invention relates to the technical field of organic materials, and provides an organic compound as well as an electronic element and an electronic device using the same. The structure of the organic compound is composed of a chemical formula I and a chemical formula II. When the organic compound is used for a light-emitting layer of an organic electroluminescencedevice, the efficiency of the device can be effectively improved, and the service life of the organic electroluminescence device is prolonged.
Nitrogen-containing compound and electronic component comprising nitrogen-containing compound and electronic device
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Paragraph 0205-0208, (2021/06/26)
The invention provides a nitrogen-containing compound and an electronic component comprising nitrogen-containing compound and an electronic device, and belongs to the technical field of organic electroluminescence. The nitrogen-containing compound has a polycyclic conjugation characteristic, a condensed indolocarbazole parent structure, high bond energy between atoms and good thermal stability, is beneficial to solid-state accumulation between molecules, and shows long service life as a luminescent layer material in an organic electroluminescent device. The structure is formed by connecting a benzoxazole or benzothiazole group and a nitrogen-containing group (triazine, pyridine and pyrimidine) through a mother nucleus structure of a fused aromatic ring; the combination enables the partial structure to have high dipole moment, so that the polarity of the material is improved. When the nitrogen-containing compound is used as a luminescent layer material of an organic electroluminescent device, the electronic transmission performance of the device is effectively improved, the luminous efficiency of the device is improved, and the service life of the device is prolonged.