| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
38권 2호 |
| 발표분야 |
Molecular Self-Assembly from Small Molecules and Liquid Crystals to Macromolecules |
| 제목 |
Chemically Modified Graphene Electrode for Polymer Light Emitting Diode |
| 초록 |
We demonstrate workfunction-tunable, highly conductive, N-doped reduced graphene film, which can be successfully employed as a transparent cathode for high-performance polymer light-emitting diodes (PLEDs) as an alternative to fluorine-doped tin oxide (FTO). The optimal doping of quaternary nitrogen and the effective removal of oxygen functionalities via sequential hydrazine treatment and thermal reduction accomplished the low resistance. The PLEDs employing N-doped reduced graphene cathodes exhibited a maximum electroluminescence efficiency higher than those of FTO-based devices (4.0 cd/A for FTO and 7.0 cd/A for N-doped graphene at 17 000 cd/m2). The reduced barrier for electron injection from a workfunction-tunable, N-doped reduced graphene cathode offered this remarkable device performance. |
| 저자 |
이경은1, 황진옥2, 박지선3, 김상욱4
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| 소속 |
1카이스트, 2IBS, 3ADD, 4KETI |
| 키워드 |
graphene; carbon nanomaterials; PLED
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| E-Mail |
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