| 摘要 |
A semiconductor device includes a semiconductor substrate, a channel layer, a Schottky layer, a first layer having a narrow band gap than the Schottky layer, a second layer having band discontinuity with the Schottky layer, a gate electrode, an n+ layer, a source electrode, and a drain electrode. The first and second layers are within the Schottky layer, and the second layer is disposed on the first layer.
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