Richard A. Kiehl, Sandip Tiwari, Steven L. Wright, M. A. Olson

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A p-channel heterostructure MISFET-like device based on a quantum well with an underlying impurity layer is discussed. The device is based on an AlGaAs/GaAs heterostructure with a recessed-gate geometry and uses Zn-diffused refractory-metal contacts. The 4100 cm**2/V-s hold mobility obtained in this inverted-interface structure at 77 K is comparable to that achieved in normal-interface AlGaAs/GaAs heterostructures. Transconductance and K-factor values as high as 52 mS/mm and 140 mS/V-mm, respectively, are obtained at 77 K in p-channel FETs with 2. 0- mu m gate lengths and 6. 0- mu m source-drain spacings, representing state-of-the-art values for p-HFETs at similar dimensions.

Original languageEnglish (US)
JournalElectron device letters
Issue number6
StatePublished - Jan 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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