화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.22, No.5, 569-573, May, 2014
DOI10.1007/s13233-014-2068-z  Export Citation
New Donor-Acceptor Copolymer Containing Dialkoxy Naphthalene and Carbonylated Thieno[3,4-b]thiophene for OTFT and OPV
Gi Back Lee, Ran Kim1, Hyo-Jung Cha2, Chan Eon Park2, †, Jin Hak Kim†, and Yun-Hi Kim1, †
  • School of Materials Science and Engineering and ERI, Gyeongsang National University, Gyeongnam, 660-701, Korea
  • 1Department of Chemistry, Gyeongsang National University, Gyeongnam, 660-701, Korea
  • 2Organic Electronics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology, Gyeongnam, 790-784, Korea
E-mail:, ,
A new copolymer (PONTET), composed of dialkoxy napthalene as donor and a carbonylated thieno [3,4-b]thiophene group as an acceptor, was obtained by Suzuki coupling polymerization. The number average molecular weight (Mn) of PONTET is 6.4 kg mol-1 with a polydispersity index of 1.20, determined by gel permeation chromatography using chloroform. PONTET showed broad absorption with a maximum at 534 nm in solution and 618 nm in a thin film, respectively. The hole mobility of PONTET was 1.5×10-3 cm2/Vs and the Ion/Ioff ratio was 7.7×104. The maximum power conversion efficiency of a PONTET:PC70BM (1:4)-based solar cell reached 1.3% with an open circuit voltage (Voc) of 0.56 V, a short circuit current density (Jsc) of 5.6 mA/cm2, and a fill factor (FF) of 41.3%.
Keywords:carbonylated thieno[3,4-b]thiophene;dialkoxy naphthalene;OTFT;solar cell.
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