2,1,3-Benzooxadiazole, thiophene and benzodithiophene based random copolymers for organic photovoltaics: thiophene versus thieno[3,2-b]thiophene as pi-conjugated linkers

Date

2016-12-01

Author

Goker, SEZA
HIZALAN, Gonul
AKTAS, Ece
KUTKAN, Seda
Çırpan, Ali
Toppare, Levent Kamil

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Three conjugated random copolymers comprising benzodithiophene and thiophene as the donor units and benzooxadiazole as the acceptor unit, spaced with thiophene and thieno[3,2-b]thiophene pi-bridges, were designed and synthesized. The effects of different linkers on the optical and electrochemical properties were investigated. The polymer containing a thieno[3,2-b]thiophene pi-bridge revealed a red shifted absorption compared to its thiophene analogue. Morphological and photovoltaic properties of a polymer:fullerene blend film were investigated. The blend of one of the random copolymers (P-2) and PC71BM ([6,6]-phenyl-C-71-butyric acid methyl ester) revealed a photovoltaic performance efficiency of 5.17% due to the high short-circuit current density and fill factor.

Subject Keywords

Materials Chemistry, General Chemistry, Catalysis

URI

https://hdl.handle.net/11511/46821

Journal

NEW JOURNAL OF CHEMISTRY

DOI

https://doi.org/10.1039/c6nj02469f

Collections

Department of Chemistry, Article

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2,1,3-Benzooxadiazole, thiophene and benzodithiophene based random copolymers for organic photovoltaics: Thiophene versus thieno[3,2-b]thiophene as pi-conjugated linkers Göker, Seza; Hizalan, Gonul; Aktas, Ece; Kutkan, Seda; Çırpan, Ali; Toppare, Levent Kamil (2017-04-02) Three conjugated random copolymers comprising benzodithiophene and thiophene as the donor units and benzooxadiazole as the acceptor unit, spaced with thiophene and thieno[3,2-b]thiophene π-bridges, were designed and synthesized. The effects of different linkers on the optical and electrochemical properties were investigated. The polymer containing a thieno[3,2-b]thiophene π-bridge revealed a red shifted absorption compared to its thiophene analogue. Morphological and photovoltaic properties of a polymer:ful...
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Citation Formats

S. Goker, G. HIZALAN, E. AKTAS, S. KUTKAN, A. Çırpan, and L. K. Toppare, “2,1,3-Benzooxadiazole, thiophene and benzodithiophene based random copolymers for organic photovoltaics: thiophene versus thieno[3,2-b]thiophene as pi-conjugated linkers,” NEW JOURNAL OF CHEMISTRY, pp. 10455–10464, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46821.