Extended Data Fig. 7: Optical bandgap measurement of NAMC.

a, UV-Vis-NIR absorption spectrum of NAMC. b, Tauc plots derived from the absorption spectrum. The red line indicates linear extrapolation of the absorption edge.

a, UV-Vis-NIR absorption spectrum of NAMC. b, Tauc plots derived from the absorption spectrum. The red line indicates linear extrapolation of the absorption edge.