Generalized High-Energy Thermionic Electron Injection at Graphene Interface

  title={Generalized High-Energy Thermionic Electron Injection at Graphene Interface},
  author={Yee Sin Ang and Yueyi Chen and Chuan Tan and Lay Kee Ang},
  journal={Physical Review Applied},
Graphene thermionic electron emission across high-interface-barrier involves energetic electrons residing far away from the Dirac point where the Dirac cone approximation of the band structure breaks down. Here we construct a full-band model beyond the simple Dirac cone approximation for the thermionic injection of high-energy electrons in graphene. We show that the thermionic emission model based on the Dirac cone approximation is valid only in the graphene/semiconductor Schottky interface… 

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