Andrew Green

Air Force Research Laboratory, Sensors Directorate

  • Self-Aligned Refractory Metal Gate Scaling in β-Ga2O3 MOSFETs

    Kelson Chabak, Air Force Research Laboratory, Sensors Directorate
    Kyle Liddy, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Andrew Green, Air Force Research Laboratory, Sensors Directorate
    Thaddeus Asel, Air Force Research Laboratory, Wright Patterson AFB, OH, USA
    Shin Mou, Air Force Research Laboratory, Wright Patterson AFB, OH
    Kevin Leedy, Air Force Research Laboratory, Sensors Directorate
    Donald Dorsey, Air Force Research Laboratory Materials and Manufacturing Directorate

    This work characterizes the effects of gate-length (LG) scaling in a self-aligned gate (SAG) β-Ga2O3 MOSFET process. Additional performance gains are expected by extending the SAG process from large LG to sub-micrometer dimensions.  This data incorporates LG scaling down to 200 nm to improve device performance in Ga2O3 SAG MOSFETs using a stepper lithography process to define sub-micron gate lengths.

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  • 14.4 Device Development of Gallium Oxide MOSFETs Grown by MOVPE on Native Substrates for High-Voltage Applications

    Neil Moser A., Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH,
    Kelson Chabak, Air Force Research Laboratory, Sensors Directorate
    Andrew Green, Air Force Research Laboratory, Sensors Directorate
    Dennis Walker, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Stephen Tetlak, AFRL
    Eric Heller, AFRL
    Antonio Crespo, Air Force Research Laboratory, Sensors Directorate
    Robert Fitch, AFRL
    Jonathan McCandless, AFRL
    Kevin Leedy, Air Force Research Laboratory, Sensors Directorate
    Michele Baldini, Leibniz-Institut für Kristallzüchtung
    Guenter Wagner, Leibniz-Institut für Kristallzüchtung
    Glen Via, AFRL
    John Blevins, Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH
    Gregg Jessen, AFRL
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  • May 11, 2022 // 11:40am

    8.3 Device Figure of Merit Performance of Scaled Gamma-Gate β-Ga2O3 MOSFETs

    Kyle Liddy, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Ahmad Islam, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Jeremiah Williams, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Dennis Walker, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Neil Moser A., Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH,
    Kelson Chabak, Air Force Research Laboratory, Sensors Directorate
    Andrew Green, Air Force Research Laboratory, Sensors Directorate
    Daniel M. Dryden, KBR, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Nicholas P. Sepelak, KBR, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA

    [embeddoc url=”https://csmantech.org/wp-content/uploads/2023/09/8.3.2022-Device-Figure-of-Merit-Performance-of-Scaled-Gamma-Gate.pdf” download=”all”]

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  • May 10, 2022 // 4:50pm

    4.3 Transfer of the AFRL 0.14 μm AlGaN/GaN-on-SiC MMIC Process to MACOM’s Commercial Fab

    G. Cueva, MACOM
    E. Werner, KBR, Wright-Patterson AFB
    A. Islam, Air Force Research Laboratory
    N. Miller, Air Force Research Laboratory
    A. Crespo, Air Force Research Laboratory, Sensors Directorate
    Nicholas P. Sepelak, KBR, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    D. Walker Jr., Air Force Research Laboratory
    Gary Hughes, Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH
    R. Fitch, Air Force Research Laboratory
    K. Chabak, Air Force Research Laboratory, Sensors Directorate
    Andrew Green, Air Force Research Laboratory, Sensors Directorate
    Kyle Liddy, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA

    [embeddoc url=”https://csmantech.org/wp-content/uploads/2023/09/4.3.2022-Transfer-of-the-AFRL-0.14um-AlGaNGaN-on-SiC-MMIC.pdf” download=”all”]

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  • 3.5.2021 LOL 1000 Liftoff Resist as an Antireflective Coating for MMIC Electroplating

    Elizabeth Werner, KBR
    Daniel Brooks, Air Force Research Laboratory
    Kyle Liddy, Air Force Research Laboratory
    Robert Fitch Jr., Air Force Research Laboratory
    James Gillespie, Air Force Research Laboratory
    Dennis Walker Jr., Air Force Research Laboratory
    Antonio Crespo, Air Force Research Laboratory, Sensors Directorate
    Daniel M. Dryden, KBR
    Andrew Green, Air Force Research Laboratory, Sensors Directorate
    Kelson Chabak, Air Force Research Laboratory, Sensors Directorate

    [embeddoc url=”http://csmantech.org/wp-content/uploads/Digest/Digests-2021/3.5.2021-Paper-LOL-1000-Liftoff-Resist-as-an-Antireflective-Coating-for-MMIC-Electroplating.pdf” download=”all” viewer=”google”]

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  • 12.2.2023 High Temperature Studies of 140 nm T-gate AlGaN/GaN HEMT Devices

    Ahmad Islam, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Adam Miesle, KBR Inc.
    Nicholas P. Sepelak, KBR, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Hanwool Lee, KBR Inc.
    Dennis E. Walker Jr., Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH,
    N. Miller, Air Force Research Laboratory
    Matt Grupen, Air Force Research Laboratory, Sensors Directorate
    Kyle Liddy, Air Force Research Laboratory Sensors Directorate, WPAFB, OH, USA
    Antonio Crespo, Air Force Research Laboratory, Sensors Directorate
    Gary Hughes, Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH
    Wenjuan Zhu, University of Illinois, Urbana
    Kelson Chabak, Air Force Research Laboratory, Sensors Directorate
    Andrew J. Green, Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, OH,

    12.2.2023_CSMANTECH_FinalPaper_HT_Islam_rev