Investigation of Un-doped GaN Cap Layer on RF and Trap Related Characteristics in AlGaN/GaN HEMTs

  • Wen Hsin Wu*
  • , Yong Han Lin
  • , Che Kai Lin
  • , Fan Hsiu Huang
  • , Wei Chou Wang
  • *Corresponding author for this work

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

Abstract

In this work, the influence of un-doped GaN cap layer on AlGaN/GaN high electron mobility transistors (HEMTs) has been studied by using DC, pulsed I-V, capacitance-voltage (C-V), and load-pull characterizations. The device without cap layer is found to exhibit smaller dynamic range (Von-Vth) compared to that of the device with cap layer. However, the lower interface trap density in the device without cap layer can lead to higher drain current with different quiescent points, resulting in better RF power and gain at 2.7 GHz.

Original languageEnglish
Title of host publicationCS MANTECH 2021 - 2021 International Conference on Compound Semiconductor Manufacturing Technology, Digest of Papers
PublisherCS Mantech
Pages81-84
Number of pages4
ISBN (Electronic)9781893580312
StatePublished - 2021
Externally publishedYes
Event35th Annual International Conference on Compound Semiconductor Manufacturing Technology, CS MANTECH 2021 - Orlando, Virtual, United States
Duration: 24 05 202127 05 2021

Publication series

NameCS MANTECH 2021 - 2021 International Conference on Compound Semiconductor Manufacturing Technology, Digest of Papers

Conference

Conference35th Annual International Conference on Compound Semiconductor Manufacturing Technology, CS MANTECH 2021
Country/TerritoryUnited States
CityOrlando, Virtual
Period24/05/2127/05/21

Bibliographical note

Publisher Copyright:
© 2021 CS MANTECH 2021 - 2021 International Conference on Compound Semiconductor Manufacturing Technology, Digest of Papers. All Rights Reserved.

Keywords

  • C-V
  • GaN
  • GaN cap
  • HEMT
  • Interface
  • Pulsed I-V
  • Trap

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