Importance

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Abstract

This disclosure discloses a power device. The power device comprises a substrate; a first semiconductor layer having a first band gap and disposed on the substrate; a second semiconductor layer having a second band gap being lager than the first band gap and disposed on the first semiconductor layer; a third semiconductor layer having a third band gap smaller than the second band gap layer and disposed on the second semiconductor layer; a source electrode disposed on the third semiconductor layer; a base electrode electrically connecting the source electrode; and a p-type metal-oxide layer disposed between the base electrode and the third semiconductor layer.

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First Claim