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Hybrid Photodetection Mechanisms Tuned with Tunneling

  • Hoon Hahn Yoon
  • , Henry A. Fernandez
  • , Fedor Nigmatulin
  • , Yunyun Dai
  • , Faisal Ahmed
  • , Xiaoqi Cui
  • , Xueyin Bai
  • , Diao Li
  • , Mingde Du
  • , Harri Lipsanen
  • , Zhipei Sun
  • Aalto University
  • Beijing Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we report two strategies for realizing the hybrid photodetection mechanisms for high-performance broadband photodetectors built with tunable van der Waals (vdW) heterojunction interfaces. All electrically-controlled photoresponse tuned by the atomically-thin tunneling barrier and bandgap contrast across the vdW heterojunction interfaces can be used to adjust the tunneling resistance and suppress the dark current. Adjusting the hybrid photodetection through the switching operation can lead to an optimized optical switching ratio covering from the ultra-violet to the mid-infrared ranges. The representative device structures suitable for each strategy (1) naturally formed oxidation layer (2) energy band alignment, and their characterization exhibit how the hybrid gauge of the photodetection mechanisms can be tuned by quantum tunneling and charge trapping at the vdW heterointerfaces.

Original languageEnglish
Title of host publication2022 IEEE 22nd International Conference on Nanotechnology, NANO 2022
PublisherIEEE Computer Society
Pages427-430
Number of pages4
ISBN (Electronic)9781665452250
DOIs
Publication statusPublished - 2022
Externally publishedYes
Event22nd IEEE International Conference on Nanotechnology, NANO 2022 - Palma de Mallorca, Spain
Duration: 4 Jul 20228 Jul 2022

Publication series

NameProceedings of the IEEE Conference on Nanotechnology
Volume2022-July
ISSN (Print)1944-9399
ISSN (Electronic)1944-9380

Conference

Conference22nd IEEE International Conference on Nanotechnology, NANO 2022
Country/TerritorySpain
CityPalma de Mallorca
Period4/07/228/07/22

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