Blue Emitting Materials Based on Naphthylanthracene Derivatives Containing Electron-Withdrawing Fluorobenzenes
- Authors
- Yoon, Jhin-Yeong; Na, Eun Jae; Lee, Seok Jae; Kim, Young Kwan; Yoon, Seung Soo
- Issue Date
- Feb-2015
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- OLEDs; Blue Fluorescence; Anthracene Derivatives; Electron-Withdrawing Group
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.15, no.2, pp.1628 - 1631
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 15
- Number
- 2
- Start Page
- 1628
- End Page
- 1631
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/13667
- DOI
- 10.1166/jnn.2015.9326
- ISSN
- 1533-4880
- Abstract
- We have designed and synthesized three blue emitters based on 9-naphthylanthracene derivatives connected with various electron-withdrawing group such as 4-fluorobenzene, 2,4-difluorobenzene and 2,3,4,5,6-pentafluorobenzene (1-3). Multilayered OLEDs with the structure of ITO (180 nm)/NPB (50 nm)/Blue materials 1-3 (30 nm)/TPBi (15 nm)/Liq (2 nm)/Al (100 nm) have been fabricated to investigate their electroluminescent properties. In particular, the device using 3 showed efficient blue electroluminescent properties with a luminous, power, external quantum efficiency and CIE coordinates of 0.71 cd/A, 1.98 Im/W, 1.34% at 20 mA/cm(2) and (x = 0.16, y = 0.20) at 10.0 V, respectively. In addition, a deep blue OLED using 1 with CIE coordinates (x = 0.15, y = 0.11) at 10.0 V exhibited a luminous, power, external quantum efficiency of 2.12 cd/A, 3.04 Im/W and 1.17% at 20 mA/cm(2), respectively.
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