Electrical properties of metamorphic in0.52Al 0.48As/In0.65Ga0.35As HEMT's on GaAs substrate

  • Z. J. Qiu*
  • , R. Liu
  • , S. L. Zhang
  • , Y. S. Gui
  • , L. J. Cui
  • , Y. P. Zeng
  • , J. H. Chu
  • *Corresponding author for this work

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

Abstract

Variable magnetic field Hall measurements were performed to investigate the electrical properties in In0.52Al0.48As/In 0.65Ga0.35As metamorphic high electron mobility transistors (MMHEMT's) on GaAs substrate at the temperature range from 4 to 100 K. The Shubnikov-de Hass (SdH) measurement shows the two-dimensional electronic behavior and two-subband electron occupation in MMHEMT's. The electron densities and mobilities of the two subbands are obtained by fast Fourier transform analysis. Both the SdH oscillations and conventional Hall analysis are in good agreement in the determination of total electron density, which is about 2.1×1012 cm-2 due to incomplete transfer of the electrons. The temperature dependence of the electron mobility indicates that at low temperature alloy scattering dominates, whereas at high temperature, the mobility is mainly limited by optical phonon scattering.

Original languageEnglish
Title of host publicationICSICT-2006
Subtitle of host publication2006 8th International Conference on Solid-State and Integrated Circuit Technology, Proceedings
PublisherIEEE Computer Society
Pages875-877
Number of pages3
ISBN (Print)1424401615, 9781424401611
DOIs
StatePublished - 2006
Externally publishedYes
EventICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology - Shanghai, China
Duration: 23 Oct 200626 Oct 2006

Publication series

NameICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology, Proceedings

Conference

ConferenceICSICT-2006: 2006 8th International Conference on Solid-State and Integrated Circuit Technology
Country/TerritoryChina
CityShanghai
Period23/10/0626/10/06

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