Semiconductor devices and methods of manufacturing the same

An integrated circuit device includes a substrate including a first region and a second region, a first transistor in the first region, the first transistor being an N-type transistor and including a first silicon-germanium layer on the substrate, and a first gate electrode on the first silicon-germ...

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Bibliographische Detailangaben
Hauptverfasser: Chung Chul-Ho, Kwon Oh-Kyum, Park Myoung-Kyu
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An integrated circuit device includes a substrate including a first region and a second region, a first transistor in the first region, the first transistor being an N-type transistor and including a first silicon-germanium layer on the substrate, and a first gate electrode on the first silicon-germanium layer, and a second transistor in the second region and including a second gate electrode, the second transistor not having a silicon-germanium layer between the substrate and the second gate electrode.