A Split-Gate AlGaN/GaN Heterostructure Field-Effect Transistor with an Auxiliary Gate
AIP ADVANCES(2022)
Abstract
In this study, a split-gate AlGaN/GaN heterostructure field-effect transistor with an auxiliary gate was fabricated. Through experiment and analysis, it was discovered that by applying a constant potential (usually 0 V or negative potential) to the auxiliary gate, a negative bias can be formed between the auxiliary gate and the channel. This consumes the two-dimensional electron gas in the channel, leading to significant improvements in the saturation characteristics of split-gate devices. By applying different potentials to the main gate and the auxiliary gate, a variety of device working modes can be obtained, and the threshold voltage can be altered across a large range. These advantages make split-gate devices with auxiliary gates more suitable for increasingly complex integrated circuit applications.
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Key words
Metal Gate Transistors,AlGaN/GaN HEMTs,Field-Effect Transistors
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