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- W4289656547 abstract "In this letter, fin-shape tri-gate <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$beta $ </tex-math></inline-formula> -Ga2O3 lateral MESFETs are demonstrated with a high power figure of merit (PFOM) of 0.95 GW/cm2 – a record high for any <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$beta $ </tex-math></inline-formula> -Ga2O3 transistor to date. A low-temperature un-doped buffer-channel stack design is developed which demonstrates record high Hall and drift electron mobilities in doped <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$beta $ </tex-math></inline-formula> -Ga2O3 channels allowing for low ON resistances (RON) in <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$beta $ </tex-math></inline-formula> -Ga2O3 MESFETs. Fin-widths (Wfin) were 1.2- <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$1.5~mu text{m}$ </tex-math></inline-formula> and there were 25 fins (Nfin) per device with a trench depth of <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$sim ~1~mu text{m}$ </tex-math></inline-formula> . A <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$beta $ </tex-math></inline-formula> -Ga2O3 MESFET with a source-drain length of 6.4 <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$mu text{m}$ </tex-math></inline-formula> exhibits a high ON current (187 mA/mm), low RON ( <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$20.5~Omega $ </tex-math></inline-formula> .mm) and a high average breakdown field (4.2 MV/cm). All devices show very low reverse leakage until catastrophic breakdown for breakdown voltages (VBR) scaling from 1.1kV to ~3kV. This work demonstrates the potential of channel engineering in improving <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$beta $ </tex-math></inline-formula> -Ga2O3 device performance towards lower conduction losses for low-to-medium voltage applications." @default.
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- W4289656547 date "2022-10-01" @default.
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- W4289656547 title "High-Mobility Tri-Gate β-Ga<sub>2</sub>O<sub>3</sub> MESFETs With a Power Figure of Merit Over 0.9 GW/cm<sup>2</sup>" @default.
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- W4289656547 doi "https://doi.org/10.1109/led.2022.3196305" @default.
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