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학술발표회초록보기

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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and Properties of Conjugated Polymers utilizing Tetrafluorophenylene for Organic Photovoltaics

등록일
2014년 8월 28일 17시 55분 09초
접수번호
1364
발표코드
ORGN.P-891 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
한가람, 서홍석*
부산대학교 화학과, Korea
Recently fluorinated polymers have clearly demonstrated improved short circuit current (Jsc) and fill factor (FF) in BHJ devices in comparison with those of the nonfluorinated polymer-based devices. To study more these effects, we introduced 1,4-dibromotetra-fluorobenzene unit, which is a new strong electron withdrawing unit, adjacent to a electron rich unit. We synthesized new conjugated polymers utilizing tetrafluorophenylene; HS-5477, HS-5478, HS-5479, and HS-5480 by Suzuki and Stille polymerization. The UV-vis absorption onset of four polymers was at around 700 nm and their optical band gaps were about 1.60 eV. HOMO energy levels of four polymers were at around 5.5 eV, and their LUMO energy levels were at about -3.8 eV, corresponding to the electrochemical band gap of around 1.6 eV. Among these polymers, HS-5480 showed the greatest device performance with Voc of 0.71 V, Jsc of 8.68 mA/cm2 and FF of 0.44, giving the power conversion efficiency of 2.71%.

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