화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.24, No.5, 457-462, May, 2016
DOI10.1007/s13233-016-4047-z  Export Citation
A New BDT-Based Conjugated Polymer with Donor-Donor Composition for Bulk Heterojunction Solar Cells
Yeon-Hee Ha, Ji Eun Lee, Moon-Chan Hwang1, Yu Jin Kim2, Joon-Hwa Lee†, Chan Eon Park2, †, and Yun-Hi Kim†
  • Department of Chemistry & RIGET, Gyeongsang National University, Jin-ju, Gyeongnam, 52828, Korea
  • 1Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jin-ju, Gyeongnam, 52828, Korea
  • 2POSTECH Organic Electronics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, 37673, Korea
E-mail:, ,
We present the synthesis and photovoltaic application of a conjugated polymer, PBDT-KTBDT, composed of two benzo[1,2-b:4,5-b′]dithiophene (BDT)-based units. In detail, PBDT-KTBDT is composed of alkoxy-substitued BDT units as the electron donating groups and alkylcarbonythienyl-substitued BDT units as the electron withdrawing moieties. The proposed polymer exhibits good solubility, sufficient thermal stability, moderate UV-vis absorption wavelength and energy levels. Solution-processed organic solar cells were fabricated using PBDT-KTBDT as an electron donor and PC71BM as an electron acceptor, and a power conversion efficiency of 1.50% was obtained. Our results reveal that the copolymer with donor-donor composition is a viable candidate as a semiconductor in OPVs, and it is possible to further improve solar cells through more extensive research on these two BDT units-based materials.
Keywords:organic solar cells;polymer solar cells;bulk heterojunction solar cells;conjugated polymer
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