Abstract:
Ultra-wide bandgap (AlN, diamond, Ga 2 O 3 ) have attracted significant research interest for high power and high frequency applications. Al rich (> 60%) AlGaN channel he...Show MoreMetadata
Abstract:
Ultra-wide bandgap (AlN, diamond, Ga 2 O 3 ) have attracted significant research interest for high power and high frequency applications. Al rich (> 60%) AlGaN channel heterojunction field effect transistor (HFET) is a promising candidate for high power RF devices due to the large bandgap, high breakdown field and compatible saturation velocity with GaN. Consequently, Al rich (>60%) AlGaN channel transistors have been explored [ 1 – 8 ] . The AlGaN channel (Al > 60%) transistors have demonstrated good unity gain frequency (f T ) performance (~40 GHz) and decent breakdown voltage (~45 V) [6] . However, short channel effects in Al rich (Al > 60%) transistors due to a reduced gate length between 80nm–150nm limited the high breakdown voltage performance demonstration with >10 GHz f T for Al rich (Al > 60%) AlGaN channels [6 , 7] . In this work, we demonstrate high frequency (fT > 17 GHz) and high breakdown voltage (>360 V, >150 V/μm) simultaneously for 64% AlGaN channel transistors.
Published in: 2024 Device Research Conference (DRC)
Date of Conference: 24-26 June 2024
Date Added to IEEE Xplore: 29 July 2024
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ISSN Information:
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA
College of Engineering and Computing, University of South Carolina, Columbia, SC, USA
College of Engineering and Computing, University of South Carolina, Columbia, SC, USA
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA
College of Engineering and Computing, University of South Carolina, Columbia, SC, USA
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA
Contents Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA
College of Engineering and Computing, University of South Carolina, Columbia, SC, USA
College of Engineering and Computing, University of South Carolina, Columbia, SC, USA
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA
College of Engineering and Computing, University of South Carolina, Columbia, SC, USA
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, USA
