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논문 기본 정보

자료유형
학술저널
저자정보
김지현 (대진대학교) 주성후 (대진대학교)
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제49권 제3호
발행연도
2016.6
수록면
316 - 321 (6page)

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To study emission characteristics for dual-emission tandem organic light emitting display (OLED), we fabricated blue fluorescent OLED according to thickness variation of MoO<SUB>x</SUB> as charge generation layer and Al as cathode. The bottom emission characteristics of OLED with MoO<SUB>x</SUB> 2, 3, 5 nm thickness showed threshold voltage of 9, 7, 9 V, maximum current emission efficiency of 19.32, 23.18, 15.44 cd/A and luminance of 1,000 cd/m² at applied voltage of 17.6, 13.2, 16.5 V, respectively. The top emission characteristics of OLED with MoO<SUB>x</SUB> 2, 3, 5 nm thickness indicated threshold voltage of 13, 10, 13 V, maximum current emission efficiency of 0.17, 0.23, 0.16 cd/A and luminance of 50 cd/m² at applied voltage of 22.6, 16.5, 20.1 V, respectively. In case of thicker or thinner than MoO<SUB>x</SUB> of 3 nm, the emission characteristics were decreased because of mismatching of electron and hole in emission layer. The bottom emission characteristics of OLED with Al 15, 20, 25 nm thickness showed threshold voltage of 8, 8, 7 V, maximum current emission efficiency of 18.42, 22.98, 23.18 cd/A and luminance of 1,000 cd/m² at applied voltage of 16.2, 13.9, 13.2 V, respectively. The reduction of threshold voltage and increase of maximum current emission efficiency are caused by the increase of current injection according to increase of Al cathode thickness. The top emission characteristics of OLED with Al 15, 20, 25 nm thickness indicated threshold voltage of 7, 7, 8 V, maximum emission luminance of 371, 211, 170 cd/m², respectively. The top emission OLED of Al cathode with 15 nm thickness showed maximum luminance and it decreased at thickness of 20 nm. These phenomena are caused by the decrease of intensity of emitted light by reduction of optical transmittance according to increase of Al cathode thickness.

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Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
References

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UCI(KEPA) : I410-ECN-0101-2017-581-000848316