InGaAs/AlAs Resonant Tunneling Diodes with Very High Negative Differential Conductance for Efficient and Cost-Effective mm-Wave/THz Sources

Saad G. Muttlak, Omar Abdulwahid, J. Sexton, M. Missous

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

Abstract

The work reported here demonstrates double barrier InGaAs/AlAs resonant tunneling diodes with both high current density and negative differential conductance features. The simplicity of the device epitaxial structures exploited in this work (avoiding graded or/and quaternary layers) makes it attractive for manufacturing. An extracted negative differential conductance of 95 mS/ μm2 was deduced for RTD sample #327. This device had a high current density of 10.8mA/μm2 while still maintaining an excellent PVCR of 5, one of the highest ever reported for such a high current density making the diode suitable for low-cost mm-wave/THz regime applications. These prominent features boost the estimated intrinsic cut-off frequency of the device beyond 2THz for a relatively large mesa size of 2 μm2

Original languageEnglish
Title of host publication12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies, UCMMT 2019
PublisherIEEE
ISBN (Electronic)9781728129914
DOIs
Publication statusPublished - Aug 2019
Event12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies, UCMMT 2019 - London, United Kingdom
Duration: 20 Aug 201922 Aug 2019

Publication series

Name12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies, UCMMT 2019

Conference

Conference12th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies, UCMMT 2019
Country/TerritoryUnited Kingdom
CityLondon
Period20/08/1922/08/19

Keywords

  • mm-wave/THz applications
  • negative differential conductance
  • resonant tunneling diodes

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