화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터)
권호 39권 1호
발표분야 분자전자 부문위원회
제목 Synthesis of D-A type Small Molecular Donor Materials Having Various Electron Accepting Moiety for Organic Photovoltaic Application
초록 In this study, we designed and synthesized several D-A (donor-acceptor) type small molecular electron donating materials for OPVs (Organic Photovoltaic Cells), which had ditolylaminothienyl as an electron pushing group, 1,2,5-benzothiadiazole as a conjugated unit, and cyano alkyl acetate or N-alkyl rhodanine as an electron pulling group. The thermal, optical, and electrochemical property of small molecules with variation of acceptor’s electron pulling power were investigated by DSC, UV/Vis spectroscopy and CV, respectively. Unfortunately, our prepared small molecules showed low photovoltaic performance in conventional OPV device using a mixture of prepared small molecule and PCBM as an active layer due to weak light absorption property in visible region from 450 to 550 nm. However, our small molecules showed low FWHM value about 150 nm and we can conclude these molecules can be used as a specific photonic application (ex. organic photodiodes, transparent OPVs, tandem OPVs, and so on)
저자 김나현1, 박상만1, 이명훈2, 신원석1, 문상진1, 이창진1, 윤성철1
소속 1한국화학(연), 2전북대
키워드 D-A type small molecular electron donating materials; Organic Photovoltaic cells; ditolylaminothienyl; 1; 2; 5-benzothiadiazole; cyano alkyl acetate; N-alkyl rhodanine
E-Mail yoonsch@krict.re.kr