期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 87, 期 -, 页码 90-99出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2020.03.016
关键词
Solution-Processed OLEDs; Highly efficient blue fluorescent materials; New synthetic anthracene based materials; Host materials; Dopant materials
资金
- Ministry of Trade, Industry and Energy (MOTIE, Korea) under Industrial Technology Innovation Program [10067715]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2018R1A6A1A03023788]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10067715] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A series of new asymmetric anthracene derivatives have been successfully synthesized for use in the light emitting layer of solution processed blue fluorescent organic light emitting diodes (OLEDs), which could be used both as host and dopant. Especially, new synthetic blue fluorescent materials with anthracene moieties without any alkyl chains showed high solubility in common organic solvents probably due to their severely twisted internal structures. They also show moderately high thermal stability due to their rigid internal core units. With those novel soluble blue fluorescent materials, we created moderately efficient solution-processed fluorescent OLEDs. And a new anthracene derivative [9-(9,10-di(naphthalen-2-yl)anthracen-2-yl)-9H-carbazole (DN-2-CzA)] as a host material exhibited moderately high efficiency and external quantum efficiency of up to 3.2 cd/A and 1.6%, respectively, when we utilized 4,4'-bis[4-(diphenylamino)styryl]biphenyl as a dopant. Meanwhile, the [N-(naphthalen-1-yl)-9,10-di(naphthalen-2-yl)-N-phenylanthra-cen-2-amine (DN-2-NPAA)] as a dopant material showed pretty good device performance, up to 5.2 cd/A and 2.2% (EQE), when we utilized 2-tert-butyl-9,10-di(naphth-2-yl) anthracene as a host. (C) 2020 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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