Figure 11

Plot of optical parameters against photon energy for Cs2MGaBr6 halide perovskites: (a) real part of dielectric, (b) Imaginary part of dielectric, (c) refractive index, and (d) absorption coefficient.

Plot of optical parameters against photon energy for Cs2MGaBr6 halide perovskites: (a) real part of dielectric, (b) Imaginary part of dielectric, (c) refractive index, and (d) absorption coefficient.