Abstract
In this work, four novel D–A polymeric metal complexes (P1–P4) were designed and synthesized as dye sensitizers for high-performance dye-sensitized solar cells (DSSCs), which use cyclopentadithiophene or fluorene derivatives as donor (D) and the 2-(2′-pyridyl)benzimidazole derivative as acceptor (A). All polymers exhibited good thermal stability for their application in DSSCs. DSSCs based on P1 exhibited the best power conversion efficiency of 2.49 % with the cyclopentadithiophene derivative as donor and Cd(II) as coordination ion, which can be attributed to their stronger absorption in the UV–visible region and lower band gap. This study will pave a new path to design novel conjugated organic polymers as dyes for DSSCs.
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This work was financially supported by the Open Project Program of Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, China (No. 09HJYH10).
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Liu, Y., Xie, Q., Liao, Y. et al. Novel dyes of branched chain polymeric metal complexes based on cyclopentadithiophene derivatives: synthesis, characterization and photovoltaic performance for dye-sensitized solar cells. Res Chem Intermed 42, 6163–6179 (2016). https://doi.org/10.1007/s11164-016-2452-8
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DOI: https://doi.org/10.1007/s11164-016-2452-8