Patent · US Active

Method for fabricating a gate dielectric layer and for fabricating a gate structure

US8420477B2 · kind B2 · utility

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19Claims
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Key dates

Filing dateApr 27, 2011
Grant dateApr 16, 2013
Priority date
Expiry dateNov 7, 2031

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01L21/28202
  • WIPO fieldSemiconductors
  • WIPO sectorElectrical engineering

Abstract

A method for fabricating a gate dielectric layer comprises the steps of: forming a dielectric layer on a semiconductor substrate; performing a nitrogen treating process to form a nitride layer on the dielectric layer; and performing a thermal treating process at 1150-1400° C. for a period of 400-800 milliseconds, to form a gate dielectric layer. A step of forming a gate layer on the gate dielectric layer may be performed to form a gate structure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.