Lg = 87 nm InAlAs/InGaAs High-Electron- Mobility Transistors with a gm-max of 3 S/mm and fT of 559 GHz

  • Hyeon Bhin Jo
  • , Ji Min Baek
  • , Do Young Yun
  • , Seung Woo Son
  • , Jung Hee Lee
  • , Tae Woo Kim
  • , Dae Hyun Kim
  • , Takuya Tsutsumi
  • , Hiroki Sugiyama
  • , Hideaki Matsuzaki

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

We present our latest results on L g = 87 nm InAlAs/InGaAs high-electron-mobility transistors with an excellent combination of dc and high-frequency characteristics. We obtained a maximum transconductance of 3 S/mm at V DS = 0.9 V, an ON-resistance of 273 Ω - μ m, a current gain cutoff frequency of 559 GHz, and a maximum oscillation frequency of 671 GHz. According to small-signal modeling, these outstanding device metrics are a consequence of the indium-rich InGaAs channel with very high Hall mobility, compact device design with L SD= 1 μm, and an optimized gate process that yields well-tempered behavior.

Original languageEnglish
Article number8468210
Pages (from-to)1640-1643
Number of pages4
JournalIEEE Electron Device Letters
Volume39
Issue number11
DOIs
StatePublished - Nov 2018

Keywords

  • and maximum oscillation frequency (fmax)
  • current gain cut-off frequency (fT)
  • InGaAs HEMT

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