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Ning Cai, Jing Zhang, Mingfei Xu, Min Zhang and Peng Wang Improving the Photovoltage of Dithienopyrrole Dye-Sensitized Solar Cells via Attaching the Bulky Bis(octyloxy)biphenyl Moiety to the Conjugated π-Linker Advanced Functional Materials 23

Version of Record online: 18 FEB 2013 | DOI: 10.1002/adfm.201203348

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A high molar absorption coefficient dithienopyrrole dye featuring the 3D giant bis(octyloxy)biphenyl segment is synthesized and employed to fabricate a 9.3% dye-sensitized solar cell at the AM1.5G conditions. The solar cell exhibits a reduced interfacial charge recombination of photoinjected electrons with both tris(1,10-phenanthroline)cobalt(III) ions and dye cations, in comparison with its congener possessing the hexyl substitutent.

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