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학술발표회초록보기

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  • 09월 12일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제110회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Highly efficient yellow and white phosphorescent organic light-emitting diodes using a benzothiazole-liganded new iridium complex

등록일
2012년 8월 30일 16시 24분 38초
접수번호
1467
발표코드
ORGN.P-1074 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 17일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
김희운, FEI XU1, 김지훈, 황도훈1
부산대학교, Korea
1부산대학교 화학과, Korea
We designed and synthesized a novel yellow-emitting iridium complex, bis[2-(9-ethyl-9H-carbazol-3-yl)-benzothiazole]iridium(III)acetoacetonate [(Btc)2Ir(acac)], for use in phosphorescent organic lightemitting diodes. The synthesized compound was characterized by 1H NMR and 13C NMR. Photophysical and electrochemical studies revealed photoluminescence emission at 555 nm (in solution) with a band gap energy of 2.37 eV. The phosphorescent organic light-emitting diodes based on ITO/PEDOT:PSS/α-NPD/TCTA/CBP:(Btc)2Ir(acac)(8%)/BCP/Alq3/LiF/Al exhibited a yellow emission at 562 nm with a high luminous ef?ciency of 35.4 cd/A, a maximum external quantum ef?ciency of 12.9% at 7.4V, and a very outstanding luminance of 100,048 cd/m2. Because of its high electroluminescent performance, ef?cient white phosphorescent organic light-emitting devices using this new iridium complex in the structure of ITO/TAPC/DCzPPy(x%):FIrpic(14%):(Btc)2Ir(acac)(y%)/Bphen/LiF/Al were fabricated. The device, with a new iridium(III) complex doping concentration of 0.15%, exhibited a maximum luminous ef?ciency as high as 41.6 cd/A at 5V, CIE coordinates of (0.34, 0.46), a maximum luminance of 25,010 cd/m2, and a maximum power ef?ciency of 28.9 lm/W, respectively.

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