Fig. 2. (a) EBIC signal of a P3HT:PCBM solar cell at a beam energy of 5 kV. The device was annealed at 150 C. The electron beam exposure area was 380 ตm² and the step size 21 μm. The dashed black line indicates the line scan shown in (b). (c) secondary electron image of the examined area. From Ref. [2].