Abstract:
A stack of a hard mask layer, a soft mask layer, and a photoresist is formed on a substrate. The photoresist is patterned to include at least one opening. The pattern is transferred into the soft mask layer by an anisotropic etch, which forms a carbon-rich polymer that includes more carbon than fluorine. The carbon-rich polymer can be formed by employing a fluorohydrocarbon-containing plasma generated with fluorohydrocarbon molecules including more hydrogen than fluorine. The carbon-rich polymer coats the sidewalls of the soft mask layer, and prevents widening of the pattern transferred into the soft mask. The photoresist is subsequently removed, and the pattern in the soft mask layer is transferred into the hard mask layer. Sidewalls of the hard mask layer are coated with the carbon-rich polymer to prevent widening of the pattern transferred into the hard mask.
Abstract:
A stack that includes, from bottom to top, a nitrogen-containing dielectric layer, an interconnect level dielectric material layer, and a hard mask layer is formed on a substrate. The hard mask layer and the interconnect level dielectric material layer are patterned by an etch. Employing the patterned hard mask layer as an etch mask, the nitrogen-containing dielectric layer is patterned by a break-through anisotropic etch, which employs a fluorohydrocarbon-containing plasma to break through the nitrogen-containing dielectric layer. Fluorohydrocarbon gases used to generate the fluorohydrocarbon-containing plasma generate a carbon-rich polymer residue, which interact with the nitrogen-containing dielectric layer to form volatile compounds. Plasma energy can be decreased below 100 eV to reduce damage to physically exposed surfaces of the interconnect level dielectric material layer.
Abstract:
A stack that includes, from bottom to top, a nitrogen-containing dielectric layer, an interconnect level dielectric material layer, and a hard mask layer is formed on a substrate. The hard mask layer and the interconnect level dielectric material layer are patterned by an etch. Employing the patterned hard mask layer as an etch mask, the nitrogen-containing dielectric layer is patterned by a break-through anisotropic etch, which employs a fluorohydrocarbon-containing plasma to break through the nitrogen-containing dielectric layer. Fluorohydrocarbon gases used to generate the fluorohydrocarbon-containing plasma generate a carbon-rich polymer residue, which interact with the nitrogen-containing dielectric layer to form volatile compounds. Plasma energy can be decreased below 100 eV to reduce damage to physically exposed surfaces of the interconnect level dielectric material layer.
Abstract:
Techniques facilitating formation of amorphous superconducting alloys for superconducting circuits are provided. A device can comprise one or more superconducting components that comprise an amorphous superconducting alloy comprising two or more elements. At least one element of the two or more elements is a superconducting element.
Abstract:
A stack of a hard mask layer, a soft mask layer, and a photoresist is formed on a substrate. The photoresist is patterned to include at least one opening. The pattern is transferred into the soft mask layer by an anisotropic etch, which forms a carbon-rich polymer that includes more carbon than fluorine. The carbon-rich polymer can be formed by employing a fluorohydrocarbon-containing plasma generated with fluorohydrocarbon molecules including more hydrogen than fluorine. The carbon-rich polymer coats the sidewalls of the soft mask layer, and prevents widening of the pattern transferred into the soft mask. The photoresist is subsequently removed, and the pattern in the soft mask layer is transferred into the hard mask layer. Sidewalls of the hard mask layer are coated with the carbon-rich polymer to prevent widening of the pattern transferred into the hard mask.
Abstract:
Techniques facilitating formation of amorphous superconducting alloys for superconducting circuits are provided. A device can comprise one or more superconducting components that comprise an amorphous superconducting alloy comprising two or more elements. At least one element of the two or more elements is a superconducting element.