Infineon Technologies Ag

Carlos Mazuré-Espejo

Christine Dehm

Arkalgud Sitaram

A continuous contact hole is formed in an insulation layer that separates a storage capacitor from a switching transistor. All except a section of the contact hole is filled with poly-Si. A conductive, oxidizable interlayer and a conductive oxygen barrier layer are deposited on the Poly-Si in the remaining section of the contact hole such that the interlayer is completely surrounded by the poly-Si of the contact hole, the insulation layer, and the barrier layer.

Contact-making structure for a ferroelectric storage capacitor and method for fabricating the structure

A storage capacitor, in particular a ferroelectric or paraelectric storage capacitor, and an associated contact-making structure are formed in such a way that the storage capacitor has a first electrode layer, a second electrode layer and a dielectric, ferroelectric or paraelectric capacitor intermediate layer. Proceeding from the plane of the surface of the insulation layer, the storage capacitor extends at least partly into the interior of the via contact and is electrically connected to the via contact.

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St. Nazaire les Eymes, France

Carlos Mazuré-Espejo