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Blue organic light-emitting materials based on diphenylaminofluorene and N-phenylcarbazole derivatives
- Authors
- Lee, Kum Hee; Kwon, Young Soo; Kang, Lee Kyung; Kim, Gu Young; Seo, Ji Hoon; Kim, Young Kwan; Yoon, Seung Soo
- Issue Date
- Dec-2009
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Blue-emitting materials; Diphenylaminofluorene derivatives; N-Phenylcarbazole derivatives; OLEDs
- Citation
- SYNTHETIC METALS, v.159, no.23-24, pp.2603 - 2608
- Journal Title
- SYNTHETIC METALS
- Volume
- 159
- Number
- 23-24
- Start Page
- 2603
- End Page
- 2608
- ISSN
- 0379-6779
- Abstract
- A series of diphenylaminofluorene- and phenylcarbazole-derived, blue fluorescent molecules have been synthesized via the Hornor-Wadsworth-Emmons and Suzuki-cross coupling reactions. To explore the electroluminescent properties of these molecules, multilayer devices were fabricated with a structure of ITO/NPB(1-6) doped in MADN/Bphen/Liq/Al, yielding a device that exhibited highly efficient sky-blue emissions with the luminous efficiency of 11.2 cd/A at 20 mA/cm(2), a power efficiency of 7.35 Im/W at 20 mA/cm(2), and CIEx,y coordinates of (x=0.16, y=0.26) at 8 V. Also, a deep blue CLED with CIEx,y coordinates of (x=0.16, y=0.13) at 8 V showed a luminous efficiency of 2.13 cd/A and power efficiency of 1.20 Im/W at 20 mA/cm(2), respectively. (C) 2009 Elsevier B.V. All rights reserved.
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Related Researcher
- Kim, Young Kwan
- Engineering (Applied Science)