Kim, Soo-Kang Yang, Bing Park, Young-Il Ma, Yuguang Lee, Jun-Yeob Kim, Hyoung-Juhn Park, Jongwook 2024-01-20T21:02:26Z 2024-01-20T21:02:26Z 2021-09-03 2009-08 1566-1199 https://pubs.kist.re.kr/handle/201004/132271 Three new asymmetric light emitting organic compounds were synthesized with diphenylamine or triphenylamine side groups; 10-(3,5-diphenylphenyl)-N.N-diphenylanthracen-9-amine (MADa), 4-(10-(3,5- diphenylphenyl)anthracen-9-yl)-N,N-diphenylaniline (MATa), and 4-(10-(3',5'-diphenylbiphenyl-4-yl)anthracen-9-yl)-N,N-diphenylaniline (TATa). MATa and TATa had a PLmax at 463 nm. in the blue region, and MADa had a PLmax at 498 nm. MADa and MATa had T. values greater than 120 degrees C, and TATa had a T-g of 139 degrees C. EL devices containing the synthesized compounds were fabricated in the configuration: ITO/4,4', 4 ''-tris(N-(2-naphthyl)-N-phenyl-amino)-triphenylamine (2-TNATA) (60 nm)/N.N'-bis(naphthalen- 1-yl)-N,N'-bis(phenyl)benzidine (NPB) (15 nm)/MADa or MATa or TATa or 9,10-di(2'-naphthyl)anthracene (MADN) (30 nm)/8-hydroxyquinoline aluminum (Alq(3)) (30 nm)/LiF (1 nm)/Al (200 nm). The efficiency and color coordinate values (respectively) were 10.3cd/A and (0.199, 0.152; bluish-green) for the MADa device, 4.67cd/A and (0.151, 0.177) for the MATa device, and 6.07 cd/A and (0.149, 0.177) for the TATa device. The TATa device had a high external quantum efficiency (EQE) of 6.19%, and its luminance and power efficiencies and life-time were more than twice those of the MADN device. (C) 2009 Elsevier B.V. All rights reserved. English ELSEVIER LIGHT-EMITTING DEVICES BLUE ELECTROLUMINESCENCE EMITTERS TRANSPORT DIODES Synthesis and electroluminescent properties of highly efficient anthracene derivatives with bulky side groups Article 10.1016/j.orgel.2009.04.003 1 ORGANIC ELECTRONICS, v.10, no.5, pp.822 - 833 ORGANIC ELECTRONICS 10 5 822 833 scie scopus 000268368400013 2-s2.0-67649197391 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article LIGHT-EMITTING DEVICES BLUE ELECTROLUMINESCENCE EMITTERS TRANSPORT DIODES Luminescence OLED Blue emission Highly efficient Bulky side group