N-face GaN-based microwave metal-insulator-semiconductor high electron mobility transistors by plasma-assisted molecular beam epitaxy

Man Hoi Wong*, Yi Pei, David Brown, James S. Speck, Umesh K. Mishra, Michael L. Schuette, Hyeongnam Kim, Venkatesh Balasubramanian, Wu Lu

*Corresponding author for this work

Research output: Chapter in Book/Conference Proceeding/ReportConference Paper published in a bookpeer-review

Abstract

This work investigates the use of N-face GaN-based heterostructures as a promising approach to overcome performance limitations commonly encountered in Gaface AlGaN/GaN HEMTs as their frequency of operation extends into the millimeter-wave and beyond. N-face (0001̄)?GaN, with its reversed direction of polarization compared to that of the Ga-face (0001), are well-suited for designing new device structures that address the problems of poor electron confinement and high ohmic contact resistance in highly-scaled GaN transistors. The fabrication and characterization of two N-face MISHEMT structures by plasma-assisted MBE are presented. The devices demonstrated good RF performance at 4 GHz, with the highest continuous-wave output power density and power-added efficiency exceeding 8 W/mm and 70%, respectively. At 10 GHz, an output power density and power-added efficiency of 4.2 W/mm and 49%, respectively, were achieved.

Original languageEnglish
Title of host publication2010 International Conference on Compound Semiconductor Manufacturing Technology, CS MANTECH 2010
Publication statusPublished - 2010
Externally publishedYes
Event2010 International Conference on Compound Semiconductor Manufacturing Technology - Portland, OR, United States
Duration: 17 May 201020 May 2010

Publication series

Name2010 International Conference on Compound Semiconductor Manufacturing Technology, CS MANTECH 2010

Conference

Conference2010 International Conference on Compound Semiconductor Manufacturing Technology
Country/TerritoryUnited States
CityPortland, OR
Period17/05/1020/05/10

Keywords

  • AlN
  • Gan
  • High electron mobility transistor (HEMT)
  • Microwave power
  • Molecular beam epitaxy (MBE)
  • N-face

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