Nitrogen passivation of interface states in SiO2/SiC structures

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United States of America Patent

PATENT NO 7022378
APP PUB NO 20040101625A1
SERIAL NO

10640934

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Abstract

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A nitrided oxide layer on a silicon carbide layer is processed by annealing the nitrided oxide layer in a substantially oxygen-free nitrogen containing ambient. The anneal may be carried out at a temperature of greater than about 900° C., for example, a temperature of about 1100° C., a temperature of about 1200° C. or a temperature of about 1300° C. Annealing the nitrided oxide layer may be carried out at a pressure of less than about 1 atmosphere, for example, at a pressure of from about 0.01 to about 1 atm or, in particular, at a pressure of about 0.2 atm. The nitrided oxide layer may be an oxide layer that is grown in a N2O and/or NO containing ambient, that is annealed in a N2O and/or NO containing ambient or that is grown and annealed in a N2O and/or NO containing ambient.

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Patent Owner(s)

  • CREE, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Das, Mrinal Kanti Durham, NC 16 545
Saxler, Adam William Durham, NC 58 3083

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