| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Synthesis and Characterization of Novel Green-Light-Emitting Polymers for LEDs. |
| 초록 |
New electroluminescent copolymers with BT units in the PCPP backbone, poly(4,4-bis(2-ethylhexyl)-4H-cyclopenta[def]phenanthrene)-co-poly(2,1,3-benzothiadiazole) (PCPPBTs), have been synthesized by the Suzuki coupling reaction. The copolymers exhibited maximum absorption peaks at 330-431 nm in THF solution and 337-445 nm in the solid film state. In the PL spectra were two PL emission peaks at around 400 and 530 nm in solution. The intensities of the blue-emitting peaks were decreased, while those of the green-emitting peaks were increased. The PL characteristics of these copolymers could be influenced by two competing effects: Frster energy transfer and intramolecular charge transfer. The polymer LEDs of PCPPBTs with the configuration of ITO/PEDOT/polymer/Ca:Al emitted light with maximum peaks at 508-528 nm. Among all the devices fabricated, the best device was the one with PCPPBT10, which showed the highest luminous efficiency of 1.25 cd/A and the highest brightness of 1170 cd/m2. |
| 저자 |
진영읍1, 김윤나1, 송수희1, 김준국1, 김선희2, 이광희3, 서홍석1
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| 소속 |
1부산대, 2gist, 3GIST |
| 키워드 |
green; LEDs
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| E-Mail |
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