NITRIDE-BASED TRANSISTORS AND METHODS OF FABRICATING THE SAME
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United States of America Patent
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Issued Date -
Mar 5, 2015
app pub date -
Aug 27, 2014
filing date -
Aug 28, 2013
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Abandoned
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Abstract
A method of fabricating a nitride-based transistor includes sequentially forming a first nitride-based semiconductor layer doped with first type dopant, a second nitride-based semiconductor layer doped with at least one of a second type dopant, and a third nitride-based semiconductor layer doped with at least one of the first type dopants. A first trench is formed to penetrate the third and second nitride-based semiconductor layers and to extend into the first nitride-based semiconductor layer. A fourth nitride-based semiconductor layer doped with the first type dopants is formed to fill the first trench. A second trench is formed in the fourth nitride-based semiconductor layer. A gate electrode is formed in the second trench. A source electrode is formed to be electrically connected to at least one of the third and fourth nitride-based semiconductor layers, and a drain electrode is formed to be electrically connected to the first nitride-based semiconductor layer.
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