A boron nitride - graphene - C$_{60}$ heterostructure

ORAL

Abstract

We have fabricated a new van-der-Waals heterostructure composed by BN/graphene/C$_{60}$. We performed transport measurements on the preliminary BN/graphene device finding a sharp Dirac point at the neutrality point. After the deposition of a C$_{60}$ thin film by thermal evaporation, we have observed a significant n-doping of the heterostructure. This suggests an unusual electron transfer from C$_{60}$ into the BN/graphene structure. This BN/graphene/C$_{60}$ heterostructure can be of interest in photovoltaic applications. It can be used to build devices like p-n junctions, where C$_{60}$ can be easily deposited in defined regions of a graphene junction by the use of a shadow mask. Our results are contrasted with theoretical calculations.

–

Authors

  • Claudia Ojeda-Aristizabal

    Dept. of Physics, Univ of California - Berkeley, UC Berkeley

  • Elton J.G. Santos

    Department of Chemical Engineering, Stanford University, Stanford, California 94305, USA, Department of Chemical Engineering, Stanford University

  • Seita Onishi

    UC Berkeley

  • Haider Rasool

    UC Berkeley, Center of Integrated Nanomechanical Systems, University of California, Berkeley, UC Berkeley

  • Jairo Velasco Jr.

    University of California at Berkeley, UC Berkeley

  • Salman Kahn

    UC Berkeley, Department of Physics, University of California, Berkeley

  • Aiming Yan

    Dept. of Physics, Univ of California - Berkeley; Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, UC Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory

  • Alex Zettl

    Dept. of Physics, Univ of California - Berkeley; Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley;, Physics Department, COINS, UC Berkeley. Kavli Energy NanoSciences Institute, UC Berkeley, Materials Science Division, Lawrence Berkeley National Lab, UC Berkeley, Materials Sciences Division, Lawrence Berkeley National Laboratory, Kavli Energy NanoSciences Institute at UC Berkeley, Department of Physics, University of California - Berkeley, UC Berkeley, Department of Physics, University of California at Berkeley; Materials Sciences Division, Lawrence Berkeley National Laboratory