Invention Grant
US08723262B2 SOI FinFET with recessed merged fins and liner for enhanced stress coupling 有权
SOI FinFET具有凹入的合并翅片和衬垫,用于增强应力耦合

SOI FinFET with recessed merged fins and liner for enhanced stress coupling
Abstract:
FinFETS and methods for making FinFETs with a recessed stress liner. A method includes providing an SOI substrate with fins, forming a gate over the fins, forming an off-set spacer on the gate, epitaxially growing a film to merge the fins, depositing a dummy spacer around the gate, and recessing the merged epi film. Silicide is then formed on the recessed merged epi film followed by deposition of a stress liner film over the FinFET. By using a recessed merged epi process, a MOSFET with a vertical silicide (i.e. perpendicular to the substrate) can be formed. The perpendicular silicide improves spreading resistance.
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