Table 1.

Band gap and carrier mobility of some representative 2D materials.

Material	Band Gap (eV)	Carrier Mobility (cm2V−1s−1)	Ref
Graphene	0	~2 × 105	[17]
MoS2	1.2–1.8	10–200	[17]
WS2	1.3–2.1	43–234	[18,19,20]
WSe2	1.2–1.7	140–500	[17]
SnS2	2.18–2.44	50–230	[21,22]
TiS2	0.02–2.5	7.24	[23,24]
Ti2CO2	0.91	~400	[25,26]
HfCO2	1.79	~1100	[25,27]
Zr2CO2	1.76	~600	[25,27]