We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue.

Durham University

Research & business

View Profile

Publication details for Dr Chris Groves

Mendis, Budhika G. , Bishop, Sarah J. , Groves, Chris , Szablewski, Marek , Berlie, Adam & Halliday, Douglas P. (2013). Plasmon-loss imaging of polymer-methanofullerene bulk heterojunction solar cells. Applied Physics Letters 102(25): 253301.

Author(s) from Durham


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.