Fig. 1
(a) XRD pattern and (b–d) XPS total survey and spectra for Sn and I elements, respectively, of the lead-free perovskite KCsSnI1.7Cl1.3 material.
Fig. 1 | Scientific Reports
(a) XRD pattern and (b–d) XPS total survey and spectra for Sn and I elements, respectively, of the lead-free perovskite KCsSnI1.7Cl1.3 material.
