DUAL-GATE PMOS FIELD EFFECT TRANSISTOR WITH InGaAs CHANNEL
First Claim
1. A Field Effect Transistor (FET), comprising:
- a bottom gate structure;
an InGaAs channel layer;
a top gate structure; and
a lower interface control layer and an upper interface control layer,wherein the lower interface control layer is disposed between the bottom gate structure and the InGaAs channel layer, and the upper interface control layer is disposed between the top gate structure and the InGaAs channel layer.
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Accused Products
Abstract
The present disclosure relates to the field of semiconductor Integrated Circuit (IC) manufacture, and provides an InGaAs-based double-gate PMOS Field Effect Transistor (FET). The FET includes a bottom gate electrode, a bottom gate dielectric layer, a bottom gate interface control layer, an InGaAs channel layer, an upper interface control layer, a highly doped P-type GaAs layer, an ohmic contact layer, source/drain metal electrodes, a top gate dielectric layer and a top gate electrode. The source/drain metal electrodes are located on opposite sides of the ohmic contact layer. A gate trench structure is etched to an upper surface of the interface control layer between the source and drain metal electrodes. The top gate dielectric layer uniformly covers an inner surface of the gate trench structure, and the top gate electrode is provided on the top gate dielectric layer. The present disclosure provides a PMOS FET with better gate control functionality and a low interface density with the double-gate structure and interface control layer design, in order to meet the requirements of high-performance PMOS transistors.
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Citations
15 Claims
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1. A Field Effect Transistor (FET), comprising:
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a bottom gate structure; an InGaAs channel layer; a top gate structure; and a lower interface control layer and an upper interface control layer, wherein the lower interface control layer is disposed between the bottom gate structure and the InGaAs channel layer, and the upper interface control layer is disposed between the top gate structure and the InGaAs channel layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification