| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 봄 (04/09 ~ 04/10, 대전컨벤션센터) |
| 권호 |
34권 1호 |
| 발표분야 |
신진연구자 특별 심포지움 |
| 제목 |
Hybrid organic-inorganic light emitting diodes: Influence of structure, optical and electronic properties and observation of optically-pumped lasing within the diode cavity |
| 초록 |
We present an investigation of high brightness, efficient, and encapsulation-free, high brightness encapsulation-free composite metal-oxide-polymer light emitting diodes (LEDs). In these diodes, mesoporous and/or compact form of metal-oxide layers have been used for electron injection and a MoO3 layer for hole injection. We demonstrate that compact ZnO operatess phenomenally well and significantly better than compact or mesoporous TiO2. The We make also use of the high refractive index of ZnO to confine these modes away from the absorbing electrodes, and include a nano-imprinted grating in the polymer layer to introduce distributed feedback and enhance optical out-coupling. Further to improved LED operation, we demonstrate optically-pumped lasing in devices that also function as LEDs. This demonstrates the scope to use such architectures to improve the external efficiency of organic semiconductor LEDs, and opens new possibilities for the realisation of polymer injection lasers. |
| 저자 |
송명훈1, Professor Sir Richard Friend2
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| 소속 |
1UNIST / Univ. of Cambridge, 2Cavendish Lab. |
| 키워드 |
Hybrid organic-inorganic; OLED; lasing
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| E-Mail |
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