Figure 2: Characterization of N-CLCS and CLCS films.

(a) FTIR spectra, (b,c) SEM images and (d) X-ray diffraction patterns of the N-CLCS and CLCS films. (e,f) The contact angles of water on N-CLCS/perovskite film and on CLCS/perovskite film. N-CLCS, non-crosslinked C60-SAM; CLCS, crosslinked C60-SAM.