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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials 제6권 제5호
- 발행연도
- 2005.1
- 수록면
- 233 - 237 (5page)
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초록· 키워드
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In the device structure of ITO/hole injection layer/N, N'-biphenyl-N, N'- bis-(1-naphenyl)-[1,1'-biphenyl]4,4'-diamine(NPB)/tris(8-hydroxyquinoline) aluminum(Alq3)/Al, we investigated an effect of hole-injection materials (PTFE, PVK) on the electrical characteristics and efficiency of organic light-emitting diodes. A thermal evaporation was performed to make a thickness of NPB layer with a evaporation rate of 0.5 ~ 1.0 Å/s in a base pressure of 5×10-6 Torr. We measured current-voltage characteristics and efficiency with a thickness variation of hole-injection layer. The PTFE and PVK hole-injection layer improve a performance of the device in several aspects, such as good mechanical junction, reducing the operating voltage and energy band adjustment. Compared with the devices without a hole-injection layer, we have obtained that an optimal thickness of NPB was 20 nm in the device structure of ITO/NPB/Alq3/Al. And using the PTFE or PVK hole-injection layer, the external quantum efficiencies of the devices were improved by 24.5 % and 51.3 %, respectively.
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참고문헌 (17)
참고문헌 신청
/ 1963. / Electroluminescence in organic crystals : 2042 ~
/ 1965. / Recombination radiation in anthracene crystals : 229 ~
/ 1995. / Hole resonance among more than two carbazole chromophores in poly : 1285 ~
/ 1997. / Thermal stability in oligomeric triphenylamine /tris 8-qui (lilato) : 1239 ~
/ 1999. / Electroluminescence in conjugated polymer 397 : 121 ~
/ 1965. / Recombination radiation in anthracene crystals : 229 ~
/ 1995. / Hole resonance among more than two carbazole chromophores in poly : 1285 ~
/ 1997. / Thermal stability in oligomeric triphenylamine /tris 8-qui (lilato) : 1239 ~
/ 1999. / Electroluminescence in conjugated polymer 397 : 121 ~
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