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- W4306377478 abstract "GaN-based high electron mobility transistors (HEMTs) are shown to have excellent properties, showing themselves to perform well among the throng of solid-state power amplifiers. They are particularly promising candidates for next-generation mobile communication applications due to their high power density, frequency, and efficiency. However, the radio-frequency (RF) dispersion aroused by a high surface-state density inherent in nitrides causes the degradation of GaN devices’ performance and reliability. Although various dispersion suppression strategies have been proposed successively—including surface treatment, passivation, field plate, cap layer, and Si surface doping—outcomes were not satisfactory for devices with higher frequencies until the emergence of a novel N-polar deep recess (NPDR) structure broke this deadlock. This paper summarizes the generation of dispersion, several widespread dispersion containment approaches, and their bottlenecks under high frequencies. Subsequently, we highlight the NPDR structure as a potential substitute, evaluate its technical benefits, and review the continuous exertions in recent years." @default.
- W4306377478 created "2022-10-17" @default.
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- W4306377478 date "2022-10-16" @default.
- W4306377478 modified "2023-10-05" @default.
- W4306377478 title "Surface Dispersion Suppression in High-Frequency GaN Devices" @default.
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- W4306377478 doi "https://doi.org/10.3390/cryst12101461" @default.
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