Figure 3From: Template method for fabricating interdigitate p-n heterojunction for organic solar cellSEM images of deposited C 60 films and P3HT/C 60 heterojunction. SEM images of (a) C60 film deposited on P3HT pillars, (b) C60 film deposited on a flat substrate, and (c) cross section of P3HT/C60 heterojunction, proving full infiltration of C60 between P3HT pillars.Back to article page