Gan power rectifiers and field-effect transistors on free-standing gan substrates

  • Y. Irokawa*
  • , B. Luo
  • , Jihyun Kim
  • , B. S. Kang
  • , J. R. Laroche
  • , F. Ren
  • , C. C. Pan
  • , G. T. Chen
  • , J. I. Chyi
  • , S. S. Park
  • , Y. J. Park
  • , B. P. Gila
  • , C. R. Abernathy
  • , K. H. Baik
  • , S. J. Pearton
  • *Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

There are emerging applications for GaN and electronics in control and switching of electric power in the utilities industry, advanced radar sub-systems, and in the drive-trains of hybrid electric vehicles. The key components of the inverter modules for such applications are the power rectifier and transistor. P-i-n rectifiers were fabricated on epitaxial layers grown on free-standing GaN substrates. The forward turn-on voltage was ∼5 V at 300 K and displayed a positive temperature coefficient. The specific on-state resistance was ∼5 mΩ·cm 2 at 300 K. The figure-of-merit was 0.32 MW·cm 2. The reverse recovery time was ≤ 600 ns at 300 K. A comparison of the DC and pulsed characteristics of AlGaN/GaN HFETs on both GaN and Al 2O 3 substrates before and after Sc 2O 3 passivation was performed. HFETs on GaN substrates show less electron accumulation in the gate-drain surface region than do comparable devices on Al 2O 3 substrates.

Original languageEnglish
Pages306-320
Number of pages15
Publication statusPublished - 2003
Externally publishedYes
EventState-of-the-Art Program on Compound Semiconductors XXXIX and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics IV - Proceedings of the Intenational Symposium - Orlando,FL, United States
Duration: 2003 Oct 122003 Oct 17

Other

OtherState-of-the-Art Program on Compound Semiconductors XXXIX and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics IV - Proceedings of the Intenational Symposium
Country/TerritoryUnited States
CityOrlando,FL
Period03/10/1203/10/17

ASJC Scopus subject areas

  • General Engineering

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