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

Mendis, Budhika G.; Bishop, Sarah J.; Groves, Chris; Szablewski, Marek; Berlie, Adam; Halliday, Douglas P.

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


Sarah J. Bishop

Adam Berlie


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.

Journal Article Type Article
Publication Date Jun 25, 2013
Deposit Date Jul 5, 2013
Publicly Available Date Apr 1, 2014
Journal Applied Physics Letters
Print ISSN 0003-6951
Electronic ISSN 1077-3118
Publisher American Institute of Physics
Peer Reviewed Peer Reviewed
Volume 102
Issue 25
Article Number 253301
Public URL


Published Journal Article (1.7 Mb)

Copyright Statement
© 2013 American Institute of Physics

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