Fig. 1: Properties of CsPbI3 QDs.

a TEM and HR-TEM images of CsPbI3 QDs prepared by a simple solution process; b photoluminescence spectra; c UV−Vis absorption spectra; and d powder XRD patterns of the CsPbI3 QDs
a TEM and HR-TEM images of CsPbI3 QDs prepared by a simple solution process; b photoluminescence spectra; c UV−Vis absorption spectra; and d powder XRD patterns of the CsPbI3 QDs