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Issue 26, 2014
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Spatial degradation mapping and component-wise degradation tracking in polymer–fullerene blends

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Abstract

Using X-ray absorption the effects of photodegradation in active layer materials for polymer solar cells are investigated. Through the observation of changes in the X-ray absorption energy spectra the degradation of the individual components is tracked in blends of poly-3-hexyl-thiophene (P3HT) and C60 butyric acid methyl ester (PCBM). The degradation rates in the blend are decreased by a factor of 3 for P3HT and by a factor between 1.1 and 2.3 for PCBM compared to the pure materials. For P3HT, degradation is resolved spatially using scanning transmission X-ray microscopy and the photodegradation process is found to be intrinsically homogeneous at the nanometer scale.

Graphical abstract: Spatial degradation mapping and component-wise degradation tracking in polymer–fullerene blends

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Publication details

The article was received on 06 Jan 2014, accepted on 13 Apr 2014 and first published on 16 Apr 2014


Article type: Paper
DOI: 10.1039/C4TC00028E
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J. Mater. Chem. C, 2014,2, 5176-5182

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    Spatial degradation mapping and component-wise degradation tracking in polymer–fullerene blends

    E. B. L. Pedersen, T. Tromholt, M. V. Madsen, A. P. L. Böttiger, M. Weigand, F. C. Krebs and J. W. Andreasen, J. Mater. Chem. C, 2014, 2, 5176
    DOI: 10.1039/C4TC00028E

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