Fig. 4: PL, CPL, and XPS spectra of the Sn-based perovskite semiconductor films.
a, b are the X-ray photoelectron spectroscopy of pristine and doped films. c photoluminescence spectra, d circular polarization luminescence spectra.
Fig. 4: PL, CPL, and XPS spectra of the Sn-based perovskite semiconductor films. | Nature Communications
