Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Reexamination Certificate
2006-03-21
2006-03-21
Padgett, Marianne (Department: 1762)
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
C427S537000, C134S001100, C134S001200, C438S637000, C438S653000
Reexamination Certificate
active
07014887
ABSTRACT:
The present invention generally provides a method for improving fill and electrical performance of metals deposited on patterned dielectric layers. Apertures such as vias and trenches in the patterned dielectric layer are etched to enhance filling and then cleaned in the same chamber to reduce metal oxides within the aperture. The invention also provides cleaning the patterned dielectric layer in a processing chamber with a first plasma consisting essentially of argon, wherein the first plasma is generated by supplying power to a coil surrounding the processing chamber and supplying bias to a substrate support member supporting the substrate, cleaning the patterned dielectric layer in the processing chamber with a second plasma consisting essentially of hydrogen and helium, wherein the second plasma is generated by increasing the supply of power to the coil surrounding the processing chamber and reducing the supply of bias to the substrate support member supporting the substrate, depositing a barrier layer on the patterned dielectric layer after exposing the dielectric layer to the first plasma and the second plasma, and depositing a metal on the barrier layer. Furthermore, the sequential plasma treatments can be practiced in a variety of plasma processing chambers of an integrated process sequence, including pre-clean chambers, physical vapor deposition chambers, etch chambers, and other plasma processing chambers.
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Cohen Barney M.
Ding Peijun
Li Xiangbing
Ngan Kenny King-Tai
Rengarajan Suraj
Applied Materials Inc.
Padgett Marianne
Patterson & Sheridan LLP
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