Morphology versus Vertical Phase Segregation in Solvent Annealed Small Molecule Bulk Heterojunction Organic Solar Cells

Figure 7

TEM images and corresponding SAED patterns as insets of the as-cast (a), best performing-SVT with THF for 4 s (b), and degraded-SVT with THF for 80 s (c).

(a)

(b)

(c)