Anti-reflective coating cleaning and post-etch residue removal composition having metal, dielectric and nitride compatibility
First Claim
1. A liquid removal composition, comprising about 0.01 to about 25wt % of at least one fluoride-containing compound, about 0.01 wt % to about 99.9 wt % of at least one organic solvent, about 0.01 wt % to about 10 wt % water, about 0.01 wt % to about 20 wt % of at least one corrosion inhibitor, and about 0.01 wt % to about 2 wt % of at least one of a dielectric passivating agent and/or a silicon-containing compound, the dielectric passivating agent comprising a species selected from the group consisting of boric acid, ammonium biborate, ammonium pentaborate, sodium tetraborate, ammonium biborate, 3-hydroxy-2-naphthoic acid, iminodiacetic acid, and combinations thereof, wherein the composition is free of oxidizing agents and wherein said liquid removal composition is useful for removing anti-reflective coating (ARC) materials and/or post-etch residue from a microelectronic device having such materials and/or residue thereon.
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Abstract
A liquid removal composition and process for removing anti-reflective coating (ARC) material and/or post-etch residue from a substrate having same thereon. The composition achieves at least partial removal of ARC material and/or post-etch residue in the manufacture of integrated circuitry with minimal etching of metal species on the substrate, such as aluminum, copper and cobalt alloys, and without damage to low-k dielectric and nitride-containing materials employed in the semiconductor architecture.
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Citations
18 Claims
- 1. A liquid removal composition, comprising about 0.01 to about 25wt % of at least one fluoride-containing compound, about 0.01 wt % to about 99.9 wt % of at least one organic solvent, about 0.01 wt % to about 10 wt % water, about 0.01 wt % to about 20 wt % of at least one corrosion inhibitor, and about 0.01 wt % to about 2 wt % of at least one of a dielectric passivating agent and/or a silicon-containing compound, the dielectric passivating agent comprising a species selected from the group consisting of boric acid, ammonium biborate, ammonium pentaborate, sodium tetraborate, ammonium biborate, 3-hydroxy-2-naphthoic acid, iminodiacetic acid, and combinations thereof, wherein the composition is free of oxidizing agents and wherein said liquid removal composition is useful for removing anti-reflective coating (ARC) materials and/or post-etch residue from a microelectronic device having such materials and/or residue thereon.
- 13. A method of removing ARC material and/or post-etch residue from a microelectronic device having said material and residue thereon, said method comprising contacting the microelectronic device with a liquid removal composition for sufficient time to at least partially remove said material and residue from the microelectronic device, wherein the liquid removal composition comprises about 0.01 wt % to about 25 wt % of at least one fluoride-containing compound, about 0.01 wt % to about 99.9 wt % of at least one organic solvent, about 0.01 wt % to about 10 wt % water, about 0.01 wt % to about 20 wt % of at least one corrosion inhibitor, and about 0.01 wt % to about 2 wt % of at least one of a dielectric passivating agent and/or a one silicon-containing compound, wherein the dielectric passivating agent comprises a species selected from the group consisting of boric acid, ammonium biborate, ammonium pentaborate, sodium tetraborate, ammonium biborate, 3-hydroxy-2-naphthoic acid, iminodiacetic acid, and combinations thereof and wherein the composition is free of oxidizing agents.
Specification