Microscopy from Scientific Research

Comparison of thin-film layer homogeneity for two different precursor inks (i) a) 0% ACN and b) 2-ME/ACN mixed (46% ACN) inks. Images in (ii) show the as-coated wet perovskite thin films while in (iii), sketches of the meniscus and resulting ribbing phenomena are illustrated. Images of the annealed thin films are shown in column (iv) and corresponding SEM top and cross-sectional view of images of perovskite thin films after annealing are shown in column (v).

DOI