causing the lattice cell to contract due to the slightly smaller Shannon crystal radius of Co2+ (0.72 Å) compared to Zn2+ (0.74 Å) in the wurtzite structure, resulting in a smaller bandgap
causing the lattice cell to contract due to the slightly smallerShannon crystal radius of Co2+ (0.72 Å) compared to Zn2+ (0.74 Å) inthe wurtzite structure, resulting in a smaller bandgap