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TEM tomography reconstructions of as cast (left column) and thermally annealed (right column) P3HT:Lu-PC61BM blend films. Shown are identified P3HT regions (first row), fullerene-rich regions (second row), mixed-phase regions (third row), and cross-sectional composites of all three (fourth row). Scale bars are 100 nm. Reprinted with permission from ref (233). Copyright 2013 John Wiley and Sons.
