Fig. 1: Morphology, crystal structure and electrical conductivity of CsSnI3 films.
From: Enhanced control of self-doping in halide perovskites for improved thermoelectric performance
a–c Schematics of film deposition of the co-evaporation, sequential and SLS methods, respectively (before any annealing steps). d–f Corresponding scanning electron microscopy (SEM) images of the films after any annealing steps. g X-ray diffraction spectra of three types of thin film with lattice plane indices of the most prominent peaks in each case. Electrical conductivity of three types of perovskite film in nitrogen atmosphere (h) and in air (i).
