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Graphene Quantum Dots Doping of MoS2 Monolayers.

Advanced materials (Deerfield Beach, Fla.) (2015-08-11)
Ziwei Li, Ruquan Ye, Rui Feng, Yimin Kang, Xing Zhu, James M Tour, Zheyu Fang
PMID26255655
ABSTRACT

Graphene quantum dots (GQDs) interacting with molybdenum disulfide (MoS2 ) monolayers induce an effective photoexcited charge transfer at the interface. Both the photoluminescence (PL) and valley polarization of this GQDs/MoS2 heterostructure can be modulated under various doping charge densities. The photon-exciton interaction is used to explain and calculate the heterostructure PL control, and is further applied to the valley-polarization tuning.

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