Alpha tantalum capacitor plate

A method for forming an alpha-tantalum layer comprising disposing a nitrogen containing base layer on a semiconductor substrate, bombarding the nitrogen containing base layer with a bombarding element, thereby forming an alpha-tantalum seed layer, and sputtering a layer of tantalum on the alpha-tant...

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Bibliographische Detailangaben
Hauptverfasser: TSAO JUNGIH, SUN PHIL, LIAO MIAONG, CHEN KEI-WEI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method for forming an alpha-tantalum layer comprising disposing a nitrogen containing base layer on a semiconductor substrate, bombarding the nitrogen containing base layer with a bombarding element, thereby forming an alpha-tantalum seed layer, and sputtering a layer of tantalum on the alpha-tantalum seed layer, thereby forming a surface layer of substantially alpha-tantalum.