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- W3099562360 abstract "In this article, single-layer intrinsic and fluorinated graphene were investigated as gate insertion layers in normally-OFF p-gallium nitride (GaN) gate high electron mobility transistors (HEMTs), which wraps around the bottom of the gate forming Ti/graphene/p-GaN at the bottom and Ti/graphene/SiNx on the two sides. Compared to the Au/Ti/p-GaN HEMTs without graphene, the insertion of graphene can increase the I <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>ON</sub> /I <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>OFF</sub> ratios by a factor of 50, increase the V <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>TH</sub> by 0.30 V and reduce the OFF-state gate leakage by 50 times. Additionally, this novel gate structure has better thermal stability. After thermal annealing at 350 °C, gate breakdown voltage (BV) holds at 12.1 V. This is considered to be a result of the 0.24 eV increase in Schottky barrier height and the better quality of the Ti/graphene/p-GaN and Ti/graphene/SiNx interfaces. This approach is very effective in improving the I <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>ON</sub> /I <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>OFF</sub> ratio and gate BV of normally-OFF GaN HEMTs." @default.
- W3099562360 created "2020-11-23" @default.
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- W3099562360 date "2020-03-01" @default.
- W3099562360 modified "2023-10-11" @default.
- W3099562360 title "Gate Leakage Suppression and Breakdown Voltage Enhancement in p-GaN HEMTs Using Metal/Graphene Gates" @default.
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- W3099562360 doi "https://doi.org/10.1109/ted.2020.2968596" @default.
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