Efficient deep blue organic light emitting diodes based on [2,7,7,13,13-pentamethyl-9-(10-phenylanthracen-9-yl)-7,13-dihydrobenzo[5 ,6]-s-indaceno[1,2-g]quinoline] derivatives
- Authors
- Park, Jinho; Jang, Beomsu; Moon, Yu Ji; Lee, Hakjun; Kim, Young Kwan; Yoon, Seung Soo
- Issue Date
- 2-Jul-2020
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Anthracene; blue OLEDs; fluorescence; indenoquinoline; Suzuki cross-coupling reaction
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.705, no.1, pp.120 - 126
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 705
- Number
- 1
- Start Page
- 120
- End Page
- 126
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/11638
- DOI
- 10.1080/15421406.2020.1743428
- ISSN
- 1542-1406
- Abstract
- In this study, as the ongoing effort to develop efficient blue OLEDs, two deep blue emitters based on indenoquinoline-substituted anthracene derivatives have been synthesized and characterized. Multilayer organic light emitting diodes were fabricated with the following sequence: indium-tin-oxide (ITO)/4,4',4''-tris[2-naphthyl(phenyl)amino (2-TNATA)/4,4'-bis(N-(1-naphthyl)-N-phenylamino) biphenyl (NPB)/Blue emitting materials/Bathophenanthroline (Bphen)/lithium quinolate (Liq)/Al. All the devices showed efficient blue emissions. Particularly, a device using '2,7,7,13,13-pentamethyl-9-(10-phenylanthracen-9-yl)-7,13-dihydrobenzo[5,6]-s-indaceno[1,2-g] quinoline' as an emitter showed a maximum external quantum efficiency (EQE) of 4.92% with the Commission Internationale De L'enclairage (CIE) coordinates of (0.15, 0.10) at 8.0 V.
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