Ferroelectric capacitor hydrogen barriers and methods for...

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

Reexamination Certificate

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C257S303000, C257S306000, C257SE29076, C257SE29094

Reexamination Certificate

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11033224

ABSTRACT:
Hydrogen barriers and fabrication methods are provided for protecting ferroelectric capacitors (CFE) from hydrogen diffusion in semiconductor devices (102), wherein nitrided aluminum oxide (N—AlOx) is formed over a ferroelectric capacitor (CFE), and one or more silicon nitride layers (112, 117) are formed over the nitrided aluminum oxide (N—AlOx). Hydrogen barriers are also provided in which an aluminum oxide (AlOx, N—AlOx) is formed over the ferroelectric capacitors (CFE), with two or more silicon nitride layers (112, 117) formed over the aluminum oxide (AlOx, N—AlOx), wherein the second silicon nitride layer (112) comprises a low silicon-hydrogen SiN material.

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