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논문 기본 정보

자료유형
학술저널
저자정보
주성후 (대진대학교) 양재웅 (대진대학교)
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제45권 제1호
발행연도
2012.2
수록면
20 - 24 (5page)

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초록· 키워드

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Multilayer passivation film on OLED with organic/inorganic hybrid structure as to diminish the thermal stress and expansion was researched to protect device from the direct damage of O<SUB>2</SUB> and H<SUB>2</SUB>O and improve life time characteristics. Red OLED doped with 1 vol.% Rubrene in Alq<SUB>3</SUB> was used as a basic device. The films consist of ITO(150 nm)/ELM200_HIL(50 nm)/ELM002_HTL(30 nm)/ Alq<SUB>3</SUB>: 1 vol.% Rubrene(30 nm)/Alq<SUB>3</SUB>(30 nm) and LiF(0.7 nm)/Al(100 nm) which were formed in that order. Using LiF/SiN<SUB>x</SUB> as a buffer layer was determined because it significantly improved life time characteristics without suffering damage in the process of forming passivation film. Multilayer passivation film on buffer layer didn"t produce much change in current efficiency, while the half life time at 1,000 cd/㎡ of OLED/LiF/SiN<SUB>x</SUB>/E1/SiN<SUB>x</SUB> was 710 hours which showed about 1.5 times longer than OLED/LiF/SiN<SUB>x</SUB>/E1 with 498 hours. futhermore, OLED/LiF/SiN<SUB>x</SUB>/E1/SiN<SUB>x</SUB>/E1/SiN<SUB>x</SUB> with 1301 hours showed about twice than OLED/LiF/SiN<SUB>x</SUB>/E1/SiN<SUB>x</SUB> which demonstrated that superior characteristics of life time was obtained in multilayer passivation film. Through the above result, it was suggested using LiF/SiN<SUB>x</SUB> as a buffer layer could reduce the damage from the difference of thermal expansion coefficient in OLED with protective films, and epoxy layer in multilayer passivation film could function like a buffer between SiN<SUB>x</SUB> inorganic layers with relatively large thermal stress.

목차

Abstract
1. 서론
2. 실험 방법
3. 결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2013-581-001528666