Contact trenches for enhancing stress transfer in closely spaced transistors

Scalability of a strain-inducing mechanism on the basis of a stressed dielectric overlayer may be enhanced by forming a single stress-inducing layer in combination with contact trenches, which may shield a significant amount of a non-desired stress component in the complementary transistor, while al...

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Bibliographische Detailangaben
Hauptverfasser: HOENTSCHEL, JAN, WEI, ANDY, SALZ, HEIKE
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:Scalability of a strain-inducing mechanism on the basis of a stressed dielectric overlayer may be enhanced by forming a single stress-inducing layer in combination with contact trenches, which may shield a significant amount of a non-desired stress component in the complementary transistor, while also providing a strain component in the transistor width direction when the contact material may be provided with a desired internal stress level.