Laminated diffusion barrier

A diffusion barrier that has a low dielectric constant, k, yet resistant to oxygen and/or moisture permeability is provided. The diffusion barrier includes a dielectric stack having at least two or more dielectric films, each film having a dielectric constant of about 8 or less, wherein the dielectr...

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Hauptverfasser: FITZSIMMONS JOHN ANTHONY, BARTH EDWARD PAUL, IVERS THOMAS HENRY, COHEN STEPHAN A, RESTAINO DARRYL D, WILDMAN HORATIO SEYMOUR, PURUSHOTHAMAN SAMPATH, DZIOBKOWSKI CHESTER, GATES STEPHEN MCCONNELL
Format: Patent
Sprache:eng
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Zusammenfassung:A diffusion barrier that has a low dielectric constant, k, yet resistant to oxygen and/or moisture permeability is provided. The diffusion barrier includes a dielectric stack having at least two or more dielectric films, each film having a dielectric constant of about 8 or less, wherein the dielectric stack comprises alternating films composed of a high-permeability material and a low-permeability material. A semiconductor structure including substrate having at least one wiring region and the inventive diffusion barrier formed on a surface of the substrate is also provided.