Extended Data Fig. 8: Photoluminescence of (Mg4C60)∞.

a, The open circles represent the experimental data and the solid line is the fitting result based on the Franck–Condon model. b, PL intensity as a function of excitation laser power.
a, The open circles represent the experimental data and the solid line is the fitting result based on the Franck–Condon model. b, PL intensity as a function of excitation laser power.