| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
ZnO/N-Doped Carbon Nanotube Nanocomposites Charge Transport Layer for Efficient Organic Light-Emitting Diodes |
| 초록 |
We present the remarkable electro-conductivity enhancement of solution processable ZnO charge transport layers upon dispersing a tiny amount of chemically doped CNTs and the corresponding device performance improvement of light-emitting diodes. Among various undoped or doped CNTs, whose work function was systematically tuned by substitutional doping of electron deficient B or electron rich N, N-doped CNT showed a lowered work function well-matching with the conduction band of ZnO. Consequently, ZnO/N-CNT nanocomposites transport layer with 0.08 wt% N-CNT showed a five-fold enhancement of electron mobility, while maintaining the intrinsic bandgap energy levels, optical transparency and solution processability of pure ZnO. The inverted OLEDs employing ZnO/N-CNT nanocomposites electron transport layer could facilitate well-balanced electron/hole injection and, thus, more than two-fold enhancement of maximum luminance and efficiency. |
| 저자 |
박지선1, 이주민2, 이보람3, 박형일2, 김지선4, 유승협2, 송명훈3, 김상욱2
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| 소속 |
1KETI, 2KAIST, 3UNIST, 4Imperial College London |
| 키워드 |
탄소나노튜브; 도핑; 전하전송층; 유기발광다이오드
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| E-Mail |
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