Negative differential resistance in planar graphene quantum dot resonant tunneling diodes

Feras Al-Dirini, Mahmood A. Mohammed, Liming Jiang, Md Sharafat Hossain, Babak Nasr, Faruque Hossain, Ampalavanapillai Nirmalathas, Efstratios Skafidas

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

1 Scopus citations

Abstract

Negative differential resistance (NDR), an electronic property present in resonant tunneling diodes, enables high performance terahertz frequency oscillators and multi-state logic and memory devices. An important measure of NDR is the peak-to-valley current ratio (PVCR) and this has been extremely lacking in solid-state NDR devices. Here we show how a dimensional mismatch between the quantum dot and the electrodes of a planar graphene Double Barrier Resonant Tunneling Diode (DB-RTD) greatly enhances the PVCR of the device up to a ratio of 103. Our findings suggest a promising future for the application of planar graphene quantum dot devices in next generation electronics.

Original languageEnglish
Title of host publication2017 IEEE 17th International Conference on Nanotechnology, NANO 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages965-968
Number of pages4
ISBN (Electronic)9781509030286
DOIs
StatePublished - 21 Nov 2017
Externally publishedYes

Publication series

Name2017 IEEE 17th International Conference on Nanotechnology, NANO 2017

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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