Fig. 6

SEM images for DMF solvent of MBI thin film on FTO substrate. Images (a), (b), and (c) represent MBI thin film, and (d) shows the cross-section of MBI thin film.
SEM images for DMF solvent of MBI thin film on FTO substrate. Images (a), (b), and (c) represent MBI thin film, and (d) shows the cross-section of MBI thin film.