Limited thermal budget formation of PMD layers

Coating processes – Coating by vapor – gas – or smoke – Mixture of vapors or gases utilized

Reexamination Certificate

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C427S255230, C427S255260, C427S255380, C438S738000

Reexamination Certificate

active

07431967

ABSTRACT:
A method of filling a gap on a substrate includes providing flows of silicon-containing processing gas oxidizing processing gas, and phosphorous-containing processing gas to a chamber housing the substrate and depositing a first portion of a P-doped silicon oxide film as a substantially conformal layer in the gap by causing a reaction among the processing gases and varying over time a ratio of the gases. The temperature of the substrate is maintained below about 500° C. throughout deposition of the conformal layer. The method also includes depositing a second portion of the P-doped silicon oxide film as a bulk layer by maintaining the ratio of the gases substantially constant throughout deposition of the bulk layer. The temperature of the substrate is maintained below about 500° C. throughout deposition of the bulk layer.

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Romanelli, Alex Semiconductor International website article: AMD Details 45nm Technology, at www.e-insite.net/semiconductor/; Jun. 12, 2003.
Applied Materials

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