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제107회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Molecular Engineering of Push-Pull Chromophore for Efficient Bulk-Heterojunction Morphology in Solution Processed Small Molecule Organic Photovoltaics

등록일
2011년 2월 16일 10시 13분 05초
접수번호
0416
발표코드
Ⅲ-INOR.P-20 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅲ>
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
고혜민, 김철우, 백상현, 이재관1, 고재중
고려대학교 소재화학과, Korea
1호서대학교 융합기술연구소, Korea
The synthesis and characterization of new push-pull chromophores, bisDMFA-diTh-CA, bisDMFA-diTh-MMN, and bisDMFA-diTh-MIMN that are composed of 5'-(4-(bis(9,9-dimethyl-9H-fluoren-2-yl)aniline (bisDMFA) electron donating, dithiophene bridging, and various electron withdrawing moieties, cyanoacrylic acid (CA), methylene malononitrile (MMN), and methylene indenylidene malononitrile (MIMN) were demonstrated for the efficient solution processed BHJ solar cell. The photophysical properties, the hole mobilities from the space charge limitation of current (SCLC) J-V characteristics, and surface morphologies of these materials/PCBM bulk-heterojunction films were also investigated. The best power conversion efficiency of 3.66 % (±0.12) with Jsc = 11.82 mA/cm2, FF = 0.35, and Voc = 0.90 V was observed in the BHJ film fabricated by bisDMFA-diTh-MMN/C71-PCBM composite with of 3 % 1-chloronaphthalene (CN), which is ~82 % and ~49 % higher efficiencies than before and after post-annealing without treatment of CN, respectively.

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