Nonlinear response of infrared photodetectors based on van der Waals heterostructures with graphene layers

Victor Ryzhii, Maxim Ryzhii, Dmitry Svintsov, Vladimir Leiman, Vladimir Mitin, Michael S. Shur, Taiichi Otsuji

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We report on the device model for the infrared photodetectors based on the van der Waals (vdW) heterostructures with the radiation absorbing graphene layers (GLs). These devices rely on the electron interband photoexcitation from the valence band of the GLs to the continuum states in the conduction band of the inter-GL barrier layers. We calculate the photocurrent and the GL infrared photodetector (GLIP) responsivity at weak and strong intensities of the incident radiation and conclude that the GLIPs can surpass or compete with the existing infrared and terahertz photodetectors. The obtained results can be useful for the GLIP design and optimization.

Original languageEnglish
Pages (from-to)5536-5549
Number of pages14
JournalOptics Express
Volume25
Issue number5
DOIs
Publication statusPublished - 2017 Mar 6

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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