Method and structure for threshold voltage control and drive...

H - Electricity – 01 – L

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H01L 21/283 (2006.01) H01L 21/285 (2006.01) H01L 29/40 (2006.01) H01L 29/43 (2006.01) H01L 21/324 (2006.01)

Patent

CA 2750282

A method of forming a device includes providing a substrate, forming an interfacial layer on the substrate, depositing a high-k dielectric layer on the interfacial layer, depositing an oxygen scavenging layer on the high-k dielectric layer and performing an anneal. A high-k metal gate transistor includes a substrate, an interfacial layer on the substrate, a high-k dielectric layer on the interfacial layer and an oxygen scavenging layer on the high-k dielectric layer.

L'invention porte sur un procédé de formation d'un dispositif qui consiste à utiliser un substrat, former une couche interfaciale sur le substrat, déposer une couche diélectrique à constante diélectrique élevée sur la couche interfaciale, déposer une couche d'élimination d'oxygène sur la couche diélectrique à constante diélectrique élevée et effectuer un recuit. L'invention porte également sur un transistor à grille métallique à constante diélectrique élevée qui comprend un substrat, une couche interfaciale sur le substrat, une couche diélectrique à constante diélectrique élevée sur la couche interfaciale et une couche d'élimination d'oxygène sur la couche diélectrique à constante diélectrique élevée.

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