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Plasmon-loss imaging of polymer-methanofullerene bulk heterojunction solar cells.

Mendis, Budhika G. and Bishop, Sarah J. and Groves, Chris and Szablewski, Marek and Berlie, Adam and Halliday, Douglas P. (2013) 'Plasmon-loss imaging of polymer-methanofullerene bulk heterojunction solar cells.', Applied physics letters., 102 (25). p. 253301.


The plasmon feature in an electron energy loss spectrum provides unique insight into poly(3-hexylthiophene) (P3HT)-phenyl-C61-butyric acid methyl ester (PCBM) solar cells. Analysis of the intensity, shape, and energy of the plasmon reveals information about the type of phase, distribution of P3HT semi-crystalline fibres, and PCBM packing density at high spatial resolution. Plasmon-loss imaging has also revealed nano-scale residual solvent pockets with preferentially dissolved PCBM. A robust tomography method for reconstructing the 3D morphology of the bulk heterojunction thin-film via plasmon-loss images is also presented. The analysis techniques can be used to investigate morphology evolution during thin-film processing and its effect on device performance.

Item Type:Article
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Publisher statement:© 2013 American Institute of Physics
Date accepted:No date available
Date deposited:01 April 2014
Date of first online publication:June 2013
Date first made open access:No date available

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