Interlayer distances, lattice mismatches and global band gaps (without and with SOC) of the decorated monolayers on the SiC substrate.

Material	Lattice mismatch (%)	Interlayer distance (Å)	E g without SOC (eV)	E g with SOC (eV)
PbNH2 on SiC	4.468	2.4668	0.382	0.811
PbOH on SiC	1.879	1.4824	0.438	1.010
PbSH on SiC	3.542	2.2360	0.511	0.866