The effects of proton irradiation on the reliability of InAlN/GaN high electron mobility transistors

L. Liu, C. F. Lo, Y. Y. Xi, Y. X. Wang, H. Y. Kim, J. Kim, S. J. Pearton, O. Laboutin, Y. Cao, J. W. Johnson, I. I. Kravchenko, F. Ren

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    We have investigated the effect of proton irradiation on reliability of InAlN/GaN high electron mobility transistors (HEMTs). Devices were subjected to 5-15 MeV proton irradiations with a fixed dose of 5 × 1015 cm-2, or to a different doses of 2 × 1011, 5 × 1013 or 2 × 1015 cm-2 of protons at a fixed energy of 5 MeV. During off-state electrical stressing, the typical critical voltage for un-irradiated devices was 45 to 55 V. By sharp contrast, no critical voltage was detected for proton irradiated HEMTs up to 100 V, which was instrument-limited. After electrical stressing, no degradation was observed for the drain or gate current-voltage characteristics of the proton-irradiated HEMTs. However, the drain current decreased ∼12%, and the reverse bias gate leakage current increased more than two orders of magnitude for unirradiated HEMTs as a result of electrical stressing.

    Original languageEnglish
    Title of host publicationGallium Nitride Materials and Devices VIII
    DOIs
    Publication statusPublished - 2013
    EventSPIE Symposium on Gallium Nitride Materials and Devices VIII - San Francisco, CA, United States
    Duration: 2013 Feb 42013 Feb 7

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume8625
    ISSN (Print)0277-786X

    Other

    OtherSPIE Symposium on Gallium Nitride Materials and Devices VIII
    Country/TerritoryUnited States
    CitySan Francisco, CA
    Period13/2/413/2/7

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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