Facilitative effect of graphene quantum dots in MoS2 growth process by chemical vapor deposition |
(color online) Optical microscope images of MoS2 samples on substrates treated with different concentration of GQDs solution. (a) MoS2 films that are directly grown on the sapphire. MoS2 films with GQDs at (b) 1 mg/ml, (c) 1.5 mg/ml, and (d) 2 mg/ml. |