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학술발표회초록보기

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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Small molecules are made of phenanthrothiadiazole, benzimidazole and benzodithiophene for bulk heterojunction photovoltaic cells

등록일
2014년 8월 28일 17시 58분 24초
접수번호
1367
발표코드
ORGN.P-894 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, bithiophenes are known a center aromatic ring was chosen as a subject, because the planar benzodithiophene (BDT) unit has made π-π stacking which is good for improving mobility, and the thiophenes display weaker steric hindrance and lead to smaller dihedral angles with neighboring monomers. A new D-A small molecules having benzodithiophene as the electron rich units have synthesized in organic solar cells with phenanthrothiadiazole (PT) by an electron deficient units. The DBDTPT (HS-5465) and DBDTMBI (HS-5483) were synthesized using Stille coupling reaction and estimated in OPVs. The band gaps of DBDTPT and DBDTMBI are shown 361 nm and 603 nm, respectively. HOMO and LUMO of DBDTPT and DBDTMBI were presented at -5.46 eV,-3.65 eV and -5.84 eV and -3.84 eV . The small molecules have good thermal stability. The device including DBDTMBI with PCBM (3:7) displayed a PCE value of 0.28%.

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