Novel fluorescent blue-emitting materials based on anthracene-fluorene hybrids with triphenylsilane group for organic light-emitting diodes
- Authors
- Song, Ji Young; Park, Soo Na; Lee, Seok Jae; Kim, Young Kwan; Yoon, Seung Soo
- Issue Date
- Mar-2015
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Blue OLED; Triphenylsilane; Suzuki-coupling reaction; Anthracene; Fluorescence; OLED emitters
- Citation
- DYES AND PIGMENTS, v.114, pp.40 - 46
- Journal Title
- DYES AND PIGMENTS
- Volume
- 114
- Start Page
- 40
- End Page
- 46
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/10118
- DOI
- 10.1016/j.dyepig.2014.11.003
- ISSN
- 0143-7208
- Abstract
- This paper reports the synthesis and electroluminescence properties of new blue-emitting materials based on anthracene-fluorene derivatives with triphenylsilane groups for organic light-emitting diodes. To study the electroluminescence properties, OLEDs were fabricated in the following sequence: ITO/4,4-Bis(N-(1-naphthyl)-N-phenylamino)biphenyl (50 nm)/newly designed blue materials (30 nm)/4,4-bis(N-(1-naphthyl)-N-phenylamino)biphenyl (30 nm)/8-Hydroxyquinolinolato-lithium (2 nm)/Al (100 nm). All devices exhibited blue electroluminescence. In particular, the device using 10-(9,9-dimethyl-2-(triphenylsilyl)-9H-fluoren-7-yl)-9-(4-(triphenylsilyl)phenyl) anthracene as the emitting material exhibited the deepest blue-emission with CIE coordinates of (x = 0.15, y = 0.09). Also, the device using (9,9-dimethyl-2-(10-(10-phenylanthracen-9-yl)anthracen-9-yl)-9H-fluoren-7-yl)triphenylsilane exhibited high luminous, power and quantum efficiencies of 2.53 cd/A, 1.94 Im/W and 1.72% at 20 mA/cm(2), respectively. (C) 2014 Elsevier Ltd. All rights reserved.
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