Date
Place
- Room H (Room Hall 1, 1F)
- P2. Poster Session II
- August 21, 2015 (Friday)
- 14:00 ~ 15:30
- [P2-86]
- 14:00 ~ 15:30
- Title:Fluorene Derivatives Containing Electron-Withdrawing Heteroaromatics for Blue OLED
- Young Seok Kim, Dong Young Kim (Sungkyunkwan Univ., Korea), Ho Won Lee, Song Eun Lee, Young Kwan Kim (Hongik Univ., Korea), and Seung Soo Yoon (Sungkyunkwan Univ., Korea)
Abstract: In this work, we synthesized a series of blue fluorescent materials (1-3) based of fluorene derivatives containing electron-withdrawing heteroaromatics. Compounds 1-3 showed the blue emissions both in solution and solid states under the photo-excitation conditions, as shown in Figure 2. OLED devices using these materials were fabricated in the following sequence; indium tin oxide (ITO) (180 nm) / N,N'-diphenyl-N,N'-(1-napthyl)-(1,1'-phenyl)-4,4'-diamine (NPB) (20 nm) / emiting materials (30 nm) / bathophenanthroline (Bphen) (30 nm) / lithium quinolate (Liq) (2 nm) / Al (100 nm). All devices showed the blue emissions. In particular, a device using compound 2 exhibits good EL properties with luminous efficiency and power efficiency of 0.98 cd/A and 0.51 lm/W, at 20 mA/cm2 respectively. The CIE coordinates of this device was (0.18, 0.24) at 6.0 V.
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