화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.26, No.9, 844-850, September, 2018
DOI10.1007/s13233-018-6128-7  Export Citation
Synthesis of Conjugated Wide-Bandgap Copolymers Bearing Ladder-Type Donating Units and Their Application to Non-Fullerene Polymer Solar Cells
Mai Ha Hoang1, Gi Eun Park2, 3, Dinh Long Phan1, Trinh Tung Ngo1, Tuyen Van Nguyen1, Chang Geun Park2, Min Ju Cho2, †, and Dong Hoon Choi2, †
  • 1Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
  • 2Department of Chemistry, Research Institute for Natural Sciences, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 02841, Korea
  • 3Photo-electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea
E-mail:,
Two new wide-bandgap conjugated copolymers, T-3MT and 2T-3MT, containing methyl-3-thiophenecarboxylate (3MT) as a weak accepting unit and indacenodithiophene (IDT) or indacenodithienothiophene (IDTT) as ladder-type donating units, were synthesized through Stille coupling polymerization. The effects of the IDT and IDTT units on the physical, optical, and electrochemical properties of these copolymers were investigated. Polymer solar cells (PSCs) were constructed using these new copolymers and different acceptor molecules for inter-comparative analysis of their performance. The PSCs bearing the as-cast active layers with 2,2′-((2Z,2′Z)-((4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b′] dithiophene-2,7-diyl)bis(methanylylidene))bis(3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile (IM-IDT) displayed the highest PCEs of 3.78-3.96%, mainly owing to the predominant face-on orientation of blend film, and the relatively high open circuit voltage exceeding 1.0 V.
Keywords:ladder type monomer;conjugated copolymer;wide bandgap;simple process;as-cast film;polymer solar cell
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