Vertical FET with strained channel
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United States of America Patent
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Jul 11, 2017
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N/A
app pub date -
Sep 19, 2016
filing date -
Sep 19, 2016
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Abstract
A transistor in an integrated circuit device is formed using fabrication processes that include techniques to create a strain in the channel material, thereby improving the performance of the transistor. In one or more embodiments, an initial transistor structure is formed including a substrate, a dummy fin, and a hard mask. The dummy fin structure is narrowed. A channel is epitaxially grown on the dummy fin structure to create a strain on the channel. A first gate stack is formed over the channel. The hard mask and dummy fin are removed. A second gate stack is formed over the channel. Excess material is removed from the second gate stack. The formation of the transistor is finalized using a variety of techniques.
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