Synthesis and characterization of dialkoxynaphthalene-based new π-conjugated copolymer for photovoltaic solar cell

A π -conjugated dialkoxynaphthalene-based donor-acceptor copolymer was synthesized by a Suzuki coupling reaction, and its photophysical, thermal and electrochemical properties and photovoltaic characteristics were characterized. The copolymer showed good solubility and a weight average molecular wei...

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Bibliographic Details
Published in:Macromolecular research 2011, 19(2), , pp.197-202
Main Authors: Kwon, Jun Ho, Yeo, Hyun-Dong, Cha, Hyo-Jung, Lee, Min Jung, Park, Hyun-Tae, Park, Jin-Hee, Park, Chan-Eon, Kim, Yun-Hi
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Nanochemistry
Nanotechnology
Physical Chemistry
Polymer Sciences
Soft and Granular Matter
고분자공학
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Summary:A π -conjugated dialkoxynaphthalene-based donor-acceptor copolymer was synthesized by a Suzuki coupling reaction, and its photophysical, thermal and electrochemical properties and photovoltaic characteristics were characterized. The copolymer showed good solubility and a weight average molecular weight of 11,500. The new copolymer was characterized by two absorption bands at 315 and 403 nm in the dilute solution, which were assigned to the π → π * transition and an intramolecular charge transfer band, respectively. The wide band gap of the donor-acceptor copolymer was explained by the 3-dimensional structure and tortional angle between the dialkoxynaphthalene and benzothiadiazole of the model compound. The PCE of the photovoltaic solar cell device fabricated using this copolymer reached 0.06% with a V oc , J sc , and FF of 0.59, 0.3, and 33%, respectively.
ISSN:1598-5032
2092-7673
DOI:10.1007/s13233-011-0211-7