Citation: Mukhamed L. Keshtov, Dmitry V. Marochkin, Ying-ying Fu, Zhi-yuan Xie, Yan-hou Geng, Vitaly S. Kochurov, Alexei R. Khokhlov. Thienopyrazine or Dithiadiazatrindene Containing Low Band Gap Conjugated Polymers for Polymer Solar Cells[J]. Chinese Journal of Polymer Science, ;2014, 32(7): 844-853. doi: 10.1007/s10118-014-1458-1 shu

Thienopyrazine or Dithiadiazatrindene Containing Low Band Gap Conjugated Polymers for Polymer Solar Cells

1.
A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991, GSP-1, Moscow, V-334, Vavilova St. 28, Russia
2.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
3.
Lomonosov Moscow State University, Faculty of Physics 119991, Moscow, GSP-1, 1-2 Leninskiye Gory Russia

Received Date: 29 September 2013
Revised Date: 24 December 2013

Fund Project: This work was financially supported by the Russian Foundation for Basic Research (GFEN_a No. 12-03-91175) and the National Natural Science Foundation of China (No. 51211120187).

Four new low-band-gap alternating copolymers (P-1, P-2, P-3 and P-4) based on electron-rich benzodithiophene and newly developed electron-deficient units, thienopyrazine or dithiadiazatrindene derivatives, were synthesized by Stille polycondensation. All polymers exhibit good solubility in common organic solvents and a broad absorption band in the visible to near-infrared regions. The film optical band gaps of the polymers are in the range of 1.28-2.07 eV and the highest occupied molecular orbital (HOMO) energy levels are in the range of -4.99 eV to -5.28 eV. Bulk heterojunction polymer solar cells (PSCs) of the polymers were fabricated with phenyl-C61-butyric acid methyl ester (PC61BM) as acceptor material, and a power conversion efficiency of 0.80% was realized with P-1 as donor material.
- Low band gap,
- Conjugated polymers,
- Electron-deficient aromatics,
- Polymer solar cells
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沈阳化工大学材料科学与工程学院沈阳 110142