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제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Comparison of New Small Molecular based on Benzodithiophene and Fluorinated-Quinoxaline According to Alkyl Side Chain

등록일
2018년 8월 23일 11시 02분 44초
접수번호
1379
발표코드
POLY.P-23 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 18일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Polymer Chemistry
저자 및
공동저자
Jihyeon Kwon, Youngeup Jin1,*
Industrial Chemistry, Pukyong National University, Korea
1Engineering Chemistry, Pukyong National University, Korea
The small molecular (EH-BDT(DTDFDDoQx)2, EH-BDT(DTDFDHexQx)2, Oct-BDT(DTDFDDoQx)2, and Oct-BDT(DTDFDHexQx)2) were synthesized by stille coupling reaction. These small molecular showed similar λmax in solution (475, 471, 475 and 468nm) and in film (538, 536, 538 and 540nm) state. And similarly other series, bathochromic shift was taken in film state (about 65 nm ~70nm). The benzodithiophene (BDT) unit was used as electron rich unit and quinoxaline (Qx) unit was used as electron poor unit to make donor-acceptor type small molecular solar cells. According to alkyl length of benzodithiophene and quinoxaline, the characteristics of organic solar cells were compared. These small molecular had same backbone except for alkyl side chain, so this series indicated similar electrochemical properties. A highest occupied molecular orbital (HOMO) energy level showed (-5.27 to -5.38 eV) and lowest unoccupied molecular orbital (LUMO) energy level (-3.17 to -3.21 eV) respectively. Under optimized states, the efficiency of (EH-BDT(DTDFDDoQx)2 was achieved 1.20% of power conversion efficiencies (PCE).

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