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Paper   IPM / Physic / 16648
School of Physics
  Title:   Mid-infrared photoresponse of encapsulated graphene: the role of phonons
  Author(s): 
1.  F. Mahmoudi
2.  R. Asgari
  Status:   Preprint
  Journal:
  Year:  2021
  Supported by:  IPM
  Abstract:
In this work, we present an extensive study on the for mid-infrared photoresponse of monolayer graphene encapsulated by hexagonal Boron Nitride (hBN). We investigate the leading role of phonons on frequency dependence on the photoresponse when the light excites the system by analyzing the reflection and transmission coefficients of the system. The photoresponse depends on the light polarization and the maximum absorption in graphene can be achieved when hBN is considered as a hyperbolic material with TM light polarization. The role of phonons in photocurrent paves the way to the possibility of tailoring the graphene photoresponse.

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