Monochromated, aberation-corrected scanning transmission electron microscopes enable the investigation of chemical distribution and optical properties such as the bandgap energy. We conducted valence and core electron energy-loss spectroscopy on nanoparticles made of the inorganic double-halide perovskites CsPb(IxBr1-x)3 (x=0-1) to investigate the distribution of halogen anions as well as Cs and P...Show More
