Blue organic light-emitting diodes based on diphenylamino dibenzo[g,p] chrysene derivatives
- Authors
- Jeong, Sujin; Kim, Se Hyun; Kim, Dong Young; Kim, Changmin; Lee, Ho Won; Lee, Song Eun; Kim, Young Kwan; Yoon, Seung Soo
- Issue Date
- 31-Aug-2017
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- OLED; Blue emitter; Dibenzo[g,p] chrysene; Buchwald-Hartwig amination; Electroluminescence
- Citation
- THIN SOLID FILMS, v.636, pp.8 - 14
- Journal Title
- THIN SOLID FILMS
- Volume
- 636
- Start Page
- 8
- End Page
- 14
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/5367
- DOI
- 10.1016/j.tsf.2017.05.011
- ISSN
- 0040-6090
- Abstract
- Three blue materials based on diphenylamino dibenzo[g,p]chrysene were designed and synthesized via Buchwald-Hartwig amination. To characterize their electroluminescent properties, multilayered organic light emitting diodes (OLEDs) were fabricated with the following device structure: indium tin oxide (ITO) (180 nm)/4,4',4 ''-tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA) (40 nm)/N,N'-diphenyl-N,N'-(1-napthyl)-(1,1'-phenyl)-4,4'-diamine (NPB) (10 nm)/2-methyl-9,10-di(naphthalen-3-yl)anthracene (mADN): 3 or 7% blue dopants (20 nm)/tris-(8-hydroxyquinoline)aluminum (Alq(3)) (30 nm)/lithium quinolate (Liq) (2 nm)/Al (100 nm). All the devices showed blue emission with high electroluminescent efficiencies. Particularly, a device using 2-methyl-9,10-di(naphthalen-3-yl)anthracene as the host material and 3,6-di[4'-(1-di(tert-butyl))phenyl]-11,14-bis(diphenylamino) dibenzo[g,p]chrysene (2) as the dopant material at 3% doping exhibited highly efficient blue emission with an external quantum efficiency of 4.72% at 20 mA/cm(2). (C) 2017 Published by Elsevier B.V.
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