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Molecules 2016, 21(6), 789;

Synthesis of a Conjugated D-A Polymer with Bi(disilanobithiophene) as a New Donor Component

Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
Department of Physics and Electronics, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
Authors to whom correspondence should be addressed.
Academic Editor: Mitsuo Kira
Received: 30 April 2016 / Revised: 7 June 2016 / Accepted: 13 June 2016 / Published: 17 June 2016
(This article belongs to the Special Issue Advances in Silicon Chemistry)
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A new conjugated donor-acceptor (D-A) polymer pDSBT2-BT containing bi(disilano-bisthiophene) and benzothiadiazole as donor and acceptor units, respectively, was prepared. The polymer showed a broad UV-vis absorption band at λmax = 599 nm in chlorobenzene. The absorption band was shifted to λmax = 629 nm when the polymer was measured as a film, indicating enhanced interchain interactions of the polymer. Bulk hetero-junction polymer solar cells (BHJ-PSCs) were fabricated using pDSBT2-BT and PC71BM as host and guest materials, respectively. Optimization of cell fabrication conditions provided a maximal power conversion efficiency of 3.3% and the following cell parameters: Voc = 0.86 V, Jsc = 7.56 mA/cm2, and FF = 0.51. Although the efficiency still leaves much to be desired, these data underscore the potential of pDSBT2-BT as a high-voltage polymer solar cell material. View Full-Text
Keywords: bulk heterojunction; polymer solar cell; D-A polymer; disilanobithiophene bulk heterojunction; polymer solar cell; D-A polymer; disilanobithiophene

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Nakashima, M.; Ooyama, Y.; Sugiyama, T.; Naito, H.; Ohshita, J. Synthesis of a Conjugated D-A Polymer with Bi(disilanobithiophene) as a New Donor Component. Molecules 2016, 21, 789.

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