Journal of Photopolymer Science and Technology
Online ISSN : 1349-6336
Print ISSN : 0914-9244
ISSN-L : 0914-9244
Synthesis, Properties, and Photovoltaic Performance of a Donor-Acceptor Copolymer Having Pyradinobisthiazole as the Acceptor Unit
Yutaka IeShohei SasadaMakoto KarakawaYoshio Aso
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2016 Volume 29 Issue 4 Pages 571-574

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Abstract

We developed PBTz-containing new D-A copolymer P-PBTz-T12-BDT. EHOMO and ELUMO were determined by the combination of PESA and UV-vis measurements in the solid state. SCLC measurements showed the hole-transporting characteristics. BHJ solar cells based on P-PBTz-T12-BDT and PC61BM showed a moderate PCE of 1.08%. To further improve the PCE, the fine-tuning of the film morphology by the alkyl side-chain engineering and/or the structural modification of π-conjugated backbones have become important, which will lead to increasing the crystallinity in the solid state. Nevertheless, the obtained results confirm that PBTz has been positioned as a good candidate for the acceptor unit for the development of high-performance organic semiconducting materials.

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© 2016 The Society of Photopolymer Science and Technology (SPST)
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