| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.700 |
| 발표분야 | 분자전자 부문위원회 |
| 제목 | Electrical characterization of electroluminescent polymer/ionomer blend devices according to ionic contents |
| 초록 | Fluorescent polymer and poly (sodium 4-styrenesulfonate) ionomer (PSS-ionomer) blends were used as emitting layers in polymer light-emitting diodes (LEDs). The two polymers were blended in the optimal ratio which shows the highest luminescent intensity due to dilution effect. We changed the ionic contents of ionomer from 5 mol% to 10 mol% with fixed optimal blended ratio when we fabricate the conjugated polymer/ionomer devices. And their electroluminescent properties were compared with those of a conjugated polymer/polystyrene (PS) blend device and neat polymer device. We obtained the narrow spectrum having high color purity in the blend system because the rigid chains of PSS-ionomer and PS reduced the interchain interactions of conjugated polymer. The conjugated polymer/PSS-ionomer blend devices achieved a more enhanced luminescent efficiency as compared with that of the conjugated polymer/PS device due to polar groups in the PSS-ionomer, which enhance the electron injection from the cathode to the emitting molecules. Acknowledgement This research was supported by a grant (code #: 04K1510-01210) from ‘Center for Nanostructured Materials Technology’ under ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, Korea |
| 저자 | 김태호1, 박오옥1, 박종혁1, 김재경2, 유재웅2 |
| 소속 | 1한국과학기술원, 2한국과학기술(연) |
| 키워드 | Luminescent efficiency; ionomer; Dilution effect; ionic contents |
