Journal Article Effect of charged metal nanoparticles on carrier injection in graphene by an external electric field

Matsubara, Manaho  ,  Okada, Susumu

10 ( 2 )  , p.025101 , 2017-02 , The Japan Society of Applied Physics
First-principles total-energy calculations clarify the effect of charged Al nanoparticles on carrier accumulation in graphene by an external electric field. Carrier injection in graphene with Al nanoparticles is sensitive to the relative position of the Al nanoparticles to the gate electrode. The nanoparticles sandwiched between graphene and an electrode prevent carrier injection in graphene, while the nanoparticles adsorbed on the opposite side do not affect the Dirac point shift, resulting in successive carrier injection in graphene. Because of the density of the state difference, the capacitance of graphene with Al nanoparticle also depends on the electrode position.

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