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Graphene Quantum Dots Doping of MoS 2 Monolayers
Author(s) -
Li Ziwei,
Ye Ruquan,
Feng Rui,
Kang Yimin,
Zhu Xing,
Tour James M.,
Fang Zheyu
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201501888
Subject(s) - materials science , molybdenum disulfide , quantum dot , graphene , heterojunction , monolayer , photoluminescence , doping , exciton , quantum heterostructure , polarization (electrochemistry) , optoelectronics , nanotechnology , condensed matter physics , quantum well , optics , physics , chemistry , laser , metallurgy
Graphene quantum dots (GQDs) interacting with molybdenum disulfide (MoS 2 ) monolayers induce an effective photoexcited charge transfer at the interface. Both the photoluminescence (PL) and valley polarization of this GQDs/MoS 2 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.