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Light‐Tunable 2D Esaki Diode Photodetector with Well‐Balanced High Detectivity and Response Speed

Light‐Tunable 2D Esaki Diode Photodetector with Well‐Balanced High Detectivity and Response Speed Van der Waals (vdW) heterojunctions composed of 2D layered materials exhibit novel physical phenomena that can power a range of electronic and photonic applications. Here, the first demonstration of the light switchable mechanism between the rectifier diode and Esaki diode in SnS2/WSe2‐black phosphorus (BP) vdW heterojunctions is presented. In this design, the photogating effect of WSe2‐BP junction is employed as the switch toggle between rectifier diode and Esaki diode. Based on this light switchable mechanism, a super‐linear photocurrent‐power dependence is observed and a high‐performance photodetector with high detectivity (5.1 × 1011 Jones) and rapid response speed (<112 us) is obtained. A feasible strategy for a well‐balanced photodetector with high detectivity and response speed in the vdW heterojunction is provided. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Materials Interfaces Wiley

Light‐Tunable 2D Esaki Diode Photodetector with Well‐Balanced High Detectivity and Response Speed

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References (38)

Publisher
Wiley
Copyright
© 2022 Wiley‐VCH GmbH
eISSN
2196-7350
DOI
10.1002/admi.202201644
Publisher site
See Article on Publisher Site

Abstract

Van der Waals (vdW) heterojunctions composed of 2D layered materials exhibit novel physical phenomena that can power a range of electronic and photonic applications. Here, the first demonstration of the light switchable mechanism between the rectifier diode and Esaki diode in SnS2/WSe2‐black phosphorus (BP) vdW heterojunctions is presented. In this design, the photogating effect of WSe2‐BP junction is employed as the switch toggle between rectifier diode and Esaki diode. Based on this light switchable mechanism, a super‐linear photocurrent‐power dependence is observed and a high‐performance photodetector with high detectivity (5.1 × 1011 Jones) and rapid response speed (<112 us) is obtained. A feasible strategy for a well‐balanced photodetector with high detectivity and response speed in the vdW heterojunction is provided.

Journal

Advanced Materials InterfacesWiley

Published: Nov 1, 2022

Keywords: esaki diodes; high detectivity; light‐tunable tunneling; photodetectors; 2D van der Waals heterojunctions

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