Solution-Processed Bulk Heterojunction Solar Cells with Silyl End-Capped Sexithiophene

Figure 8

AFM images of the blended films under various ratios (a) DSi-6T : PCBM 1 : 4 w/w nonannealed (e) annealed and (b) DSi-6T : PCBM 1 : 5 w/w non-annealed (f) annealed and (c) DSi-6T : PCBM 1 : 6 w/w non-annealed (g) annealed and (d) DH-6T : PCBM 1 : 6 w/w non-annealed (h) annealed. The image scan sizes is 5 μm × 5 μm.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)