Fig. 1: Complex dielectric function of CsPbBr3.
From: Dual phases of crystalline and electronic structures in the nanocrystalline perovskite CsPbBr3
a The real (∈1) and b imaginary (∈2) parts of the dielectric function of CsPbBr3 modeled from the spectroscopic ellipsometry data as a function of temperature. The difference in the c real and d imaginary parts of the dielectric function between 350 K and the measurements were taken below 350 K.
