원문정보
초록
영어
Organic light-emitting diodes(OLEDs) have received considerable attention since they were first reported by Tang. Novel organic fluorescent materials have been reported on synthesis and application of new organic light-emitting materials. Despite of much recent progress, fabrication of full-color OLEDs still remained to be done. Many method have been proposed to full-color OLEDs displays such as using separated red, green and blue emitters, stacking separate rad, green and blue emitter, using a white emitter with individually pattered color filters, microcavity structures and using a blue emitter with individually patterned fluorescent materials. The last method has much attention because of easy fabrication of OLEDs and low-priced fabrication. This paper reports the optical and electrical characteristics of OLEDs using novel molecules containing biphenyl structure. Optical properties of biphenyl derivatives doped with poly(9-vinyl carbazole)(PVK) are measured and found Forster energy transfer process in the blends. And devices were fabricated as ITO/PEDOT/PVK doped with biphenyl derivatives/Alq3/Li:Al and I-V-L characteristics and EL efficiency of devices were examined.
목차
1. 서론
2. 실험
2-1. 시료 및 측정기기
2-2. Color conversion material(CCM)용 형광체 중간체 합성
2-3. Color conversion material(CCM)형광체 합성 (M1, M2, M3)
3. 결과 및 고찰
3-1. 유기 합성물의 광학적 특성 분석
3-2. PVK의 광학적 특성
3-3. Color conversion material(CCM) 형광체의 광학적 특성
3-4. Color conversion material(CCM) 도핑시의 광학적 특성
3-5. 순환 전압-전류 측정 결과
3-6. 전류밀도-전압-휘도(J-V-L) 특성 분석
3-7. 저분자를 이용한 전계 발광 소자의 발광 효율
3-8. Time-Of-Flight 법을 이용한 drift mobility 측정
3-9. EL 효율과 이동도 균형과의 상관 관계
4. 결론
참고문헌