A Low-Band-Gap Polyfluorene Derivative for Use in Polymer Solar Cells

  • Joerg Wlosnewski
  • Phimwipha Piyakulawat
  • Anusit Keawprajak
  • Chaiyuth Saekung
  • Udom Asawapirom
Keywords: polymer solar cell, low-band-gap, polyfluorene, benzothiadiazole

Abstract

The novel soluble conjugated copolymer (PFTBzTT) derived from 4,7-dithienyl-2,1,3-benzothiadiazole, 9,9’-dioctylfluorene and 2,2’-bisthiophene was polymerized by a palladium catalyzed Suzuki type cross-coupling reaction. The copolymer obtained showed light absorption from 300 to 600 nm and photoluminescence from about 600 to 850 nm. The polymer-based solar cells could be prepared via solution deposition techniques (spin coating). The cells showed power conversion efficiency of 0.78 % when using PFTBzTT as donor and PCBM as acceptor with a ratio of 1 to 3 (w/w)

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How to Cite
Wlosnewski, J., Piyakulawat, P., Keawprajak, A., Saekung, C., & Asawapirom, U. (1). A Low-Band-Gap Polyfluorene Derivative for Use in Polymer Solar Cells. Science & Technology Asia, 15(5), 26-31. Retrieved from https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41236