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Issue 22, 2015
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Optical properties of a conjugated-polymer-sensitised solar cell: the effect of interfacial structure

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Abstract

Dye-sensitised solar cells (DSSCs) have sparked considerable interest over two decades. Recently, a method of polymer-wire sensitisation was demonstrated; the polymer is suggested to form a hole transport pathway (wire) following initial charge separation. We predict the optical properties of this polymer in various interfacial configurations, including the effects of chain length and attachment to {100} or {101} TiO2 facets. Contrary to most DSSCs, the {100} facet model best describes the experimental spectrum, predicting a relative thickness of 5.7 ± 0.2 μm, although {101} attachment, if implemented, may improve collection efficiency. Long chains are optimal, and stable attachment sites show minimal differences to absorbance in the major solar emission (visible) band. Combinations of {100}, {101}, and pseudo-bulk TiO2 models in three-parameter fits to experiment confirm the relative importance of the {100} facet.

Graphical abstract: Optical properties of a conjugated-polymer-sensitised solar cell: the effect of interfacial structure

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Publication details

The article was received on 14 Nov 2014, accepted on 20 Mar 2015 and first published on 13 Apr 2015


Article type: Paper
DOI: 10.1039/C4CP05290K
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2015,17, 14489-14494
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    Optical properties of a conjugated-polymer-sensitised solar cell: the effect of interfacial structure

    D. W. Drumm, A. Bilic, Y. Tachibana, A. Miller and S. P. Russo, Phys. Chem. Chem. Phys., 2015, 17, 14489
    DOI: 10.1039/C4CP05290K

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