Enhancement-mode high electron mobility transistor
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United States of America Patent
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Sep 7, 2021
Grant Date -
Jul 23, 2020
app pub date -
Jan 21, 2020
filing date -
Jan 23, 2019
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Abstract
Example embodiments relate to enhancement-mode high electron mobility transistors. One embodiment includes a method for manufacturing an enhancement-mode high electron mobility transistor. The method includes providing a stack of layers. The stack of layers includes a substrate, a III-V channel layer over the substrate, a III-V barrier layer on the channel layer, a p-doped III-V layer on the III-V barrier layer, and a Schottky contact interlayer on the p-doped III-V layer. The p-doped III-V layer has a first surface area. The Schottky contact interlayer has a second surface area. The second surface area is less than the first surface area. The second surface area leaves a peripheral part of a top surface of the p-doped III-V layer uncovered. The method also includes depositing a metal gate on the Schottky contact interlayer.
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