High-dielectric constant insulators for feol capacitors

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Having insulated electrode

Reexamination Certificate

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C257S303000, C257S370000

Reexamination Certificate

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06958506

ABSTRACT:
Methods of forming front-end-of the line (FEOL) capacitors such as polysilicon-polysilicon capacitors and metal-insulator-silicon capacitors are provided that are capable of incorporating a high-dielectric constant (k of greater than about 8) into the capacitor structure. The inventive methods provide high capacitance/area devices with low series resistance of the top and bottom electrodes for high frequency responses. The inventive methods provide a significant reduction in chip size, especially in analog and mixed-signal applications where large areas of capacitance are used.

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