Hot Carrier Tunneling in Graphene/WS2 Heterostructures

Chiara Trovatello,Giulia Piccinini,Stiven Forti,Filippo Fabbri,Antonio Rossi,Camilla Coletti,Giulio Cerullo,Stefano Dal Conte

Hot Carrier Tunneling in Graphene/WS2 Heterostructures

2020

Chiara Trovatello
Giulia Piccinini
Stiven Forti
Filippo Fabbri
Antonio Rossi
Camilla Coletti
Giulio Cerullo
Stefano Dal Conte

We investigate charge transfer dynamics in graphene/WS2 heterostructures via transient reflection spectroscopy. By selectively exciting graphene with NIR sub-20fs pulses we resolve the build-up of the WS2 excitonic transitions due to the hot-carriers tunneling.

Keywords:

reflection spectroscopy
Photon counting
Heterojunction
Optoelectronics
near infrared radiation
Quantum tunnelling
Graphene
Materials science
Spectroscopy

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