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Charging Rate

Charging rate image of a polymer blend lm. a, AFM height image of a
50:50 lm of F8BT/PFB spin coated from xylenes. The recessed domains are
enriched in PFB (lm thickness: 90 nm). b, EFM photoinduced charging rate map
generated by plotting the inverse exponential time constant for photoinduced
charging at each point in a. The dark rings indicate regions of slower charging.