Stacked/composite gate dielectric which incorporates nitrogen at an interface

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United States of America Patent

PATENT NO 6323114
SERIAL NO

09447407

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Abstract

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An embodiment of the instant invention is a method of fabricating an electronic device over a semiconductor substrate which includes a dielectric layer formed between a first structure and a second structure, the method comprising the steps of: growing an oxide-containing layer (layer 204 of FIGS. 2a-2d) on the first structure (substrate 202 of FIGS. 2a-2d); forming a silicon-containing layer (layer 206 of FIG. 2b) on the oxide-containing layer; oxidizing substantially all of the silicon-containing layer by subjecting it to an ambient comprised of oxygen and nitrogen with a substrate temperature around 700 to 800 C.; and forming the second structure (layer 214 of FIG. 2d) on the oxidized silicon-containing layer. Preferably, the step of oxidizing substantially all of the silicon-containing layer is performed by subjecting the silicon-containing layer to an ambient containing: N.sub.2 O with a wafer temperature around 700 to 800 C.; or NO with a wafer temperature around 700 to 800 C. The nitrogen is, preferably, incorporated between the oxide-containing layer and the first structure and/or between the oxide-containing layer and the oxidized silicon-containing layer.

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Patent Owner(s)

Patent OwnerAddress
TEXAS INSTRUMENTS INCORPORATED12500 TI BOULEVARD MS 3999 DALLAS TX 75243

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grider, Tad Douglas 6 35
Hattangady, Sunil V Dallas, TX 16 435
Kuehne, John W Dallas, TX 2 39

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