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- W2920409426 abstract "In this letter, we report the operation of AlGaN/GaN HEMTs with Pd gates in air over a wide temperature range from 22$^circ$C to 500$^circ$C. The variation in the threshold voltage ($V_{th}$) is less than 1$%$ over the entire temperature range. Moreover, a safe biasing region where the transconductance peak ($g_m$) occurs over the entire temperature range was observed, enabling high-temperature analog circuit design. Furthermore, the operation of the devices over 25 hours was experimentally studied, demonstrating the stability of the DC characteristics and $V_{th}$ at 400$^circ$C. Finally, the degradation mechanisms of HEMTs at 500$^circ$C over 25 hours of operation are discussed, and are shown to be associated with the 2DEG sheet density and mobility decrease." @default.
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- W2920409426 date "2019-03-01" @default.
- W2920409426 modified "2023-09-27" @default.
- W2920409426 title "Stable Operation of AlGaN/GaN HEMTs at 400$^circ$C in air for 25 hours" @default.
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