| 학회 |
한국고분자학회 |
| 학술대회 |
2007년 가을 (10/11 ~ 10/12, 일산킨텍스) |
| 권호 |
32권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Balanced charge injection in multi-layer polymer light-emitting diode with water soluble non-conjugated polymer dispersed by ionic compounds |
| 초록 |
We have fabricated highly efficient polymeric light-emitting diode (PLED) from ionic compound dispersed water soluble non-conjugated polymer, polyurethane (PU), that was used as an ultra-thin hole blocking and electron injection layer (HB-EIL) on the top of commercially available blue-emitting polymer, polyfluorene (PFO). The device with HB-EIL showed a maximum quantum efficiency of 1.7%(5V). Also device that was contained to ionic compounds showed a high luminance of 3400cd/m2(7.5V). The luminance was even increased more by dispersing the ionic compounds inside PU. We propose that the better performance in PLED with PU layer was due to a well balanced charge injection in emitting layer after not only the effective hole accumulation at the PFO/HB-EIL interface but also the enhanced electron injection due to ionic compound in the insulating PU layer. |
| 저자 |
천아름, 김수홍, 김충기, 우형석, 박동규
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| 소속 |
경성대 |
| 키워드 |
PLED; water soluble polymer; Multylayer
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| E-Mail |
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