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Synthesis and characterization of perfluorinated Thieno[3,4-C]pyrrole-4,6-dione(TPD)-based D-pi-A Copolymers for Polymer Solar cells 원문보기

  • 저자

    강다원

  • 학위수여기관

    고려대학교 대학원

  • 학위구분

    국내석사

  • 학과

    소재화학과 태양에너지소재 전공

  • 지도교수

    김환규

  • 발행년도

    2014

  • 총페이지

    83p

  • 키워드

    Polymer Solar cell OPV Fluorinated;

  • 언어

    eng

  • 원문 URL

    http://www.riss.kr/link?id=T13541932&outLink=K  

  • 초록

    Low band gap polymers have been engineered to have appropriately aligned EHOMO/ELUMO electronic levels relative to PCBM, optimized side chains to enhance solubility while enabling good interchain interactions, and low band gaps(Eg) to increase the harvested range of the solar spectrum. Fluorinated molecules have made both EHOMO and ELUMO are lowered, leading to enhanced open-circuit voltage (Voc) and have enhanced such as great thermal and solubility upon incorporation of fluorine on the acceptor unit in a D-π-A conjugated polymer backbone. For enhancing the good solubility and thermal stability of perfluorinated aromatic units, we designed and synthesized a series of various perfluorinated aromatic units containg thieno[3,4-c]pyrrole-4,6-dione (TPD)-based polymers. Stronger electron withdrawing groups in the acceptor monomer result in higher HOMO as well as lower LUMO energy levels in the D-п-A Conjugated Copolymers. So we were able to make low-band gap conjugated polymer. The photovoltaic performances based on band gap of acceptor of fluorine substituted benzene ring was significantly lower than the others and JSC of 7.1 mA cm-2, a VOC of 690V, and a FF of 0.49 corresponding to an overall conversion efficiency (η) of 2.4%.


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