摘要:
A method for forming crenulated conductors and a device having crenulated conductors includes forming a hardmask layer on a dielectric layer, and patterning the hardmask layer. Trenches are etched in the dielectric layer using the hardmask layer such that the trenches have shallower portions and deeper portions alternating along a length of the trench. A conductor is deposited in the trenches such that crenulated conductive lines are formed having different depths periodically disposed along the length of the conductive line.
摘要:
Sub-lithographic dimensioned air gap formation and related structure are disclosed. In one embodiment, a method includes forming a dielectric layer including interconnects on a substrate; depositing a cap layer on the dielectric layer; depositing a photoresist over the cap layer; patterning the photoresist to include a first trench pattern at most partially overlying the interconnects; forming a spacer within the first trench pattern to form a second trench pattern having a sub-lithographic dimension; transferring the second trench pattern into the cap layer and into the dielectric layer between the interconnects; and depositing another dielectric layer to form an air gap by pinching off the trench in the dielectric layer.
摘要:
Method of manufacturing a structure which includes the steps of providing a structure having an insulator layer with at least one interconnect, forming a sub lithographic template mask over the insulator layer, and selectively etching the insulator layer through the sub lithographic template mask to form sub lithographic features spanning to a sidewall of the plurality of interconnects.
摘要:
A method of restoring the dielectric constant, loss and leakage of an exposed surface of a low k dielectric material caused during dry etching of the low k dielectric material prior to the removal of the damaged layer by wet etch chemistries is provided. Once restored, the surface of the dielectric material will no longer be susceptible to removal by the highly anisotropic wet etching process. However, the wet etch will still pose an advantage as it can remove any etch/ash residues at the bottom of a feature formed into the low k dielectric material.
摘要:
A method of depositing a SiNxCy liner on a porous low thermal conductivity (low-k) substrate by plasma-enhanced atomic layer deposition (PE-ALD), which includes forming a SiNxCy liner on a surface of a low-k substrate having pores on a surface thereon, in which the low-k substrate is repeatedly exposed to a aminosilane-based precursor and a plasma selected from nitrogen, hydrogen, oxygen, helium, and combinations thereof until a thickness of the liner is obtained, and wherein the liner is prevented from penetrating inside the pores of a surface of the substrate. A porous low thermal conductivity substrate having a SiNxCy liner formed thereon by the method is also disclosed.
摘要:
A method of fabricating an interconnect structure on a substrate includes steps of: providing a dielectric with at least one etched opening; filling the at least one etched opening with at least one conductive material; planarizing the conductive material to provide a planarized structure; subjecting the planarized structure to a plasma preclean process; and exposing the planarized structure to a silylating repair agent which is a silane derivative; and forming a dielectric cap layer on the planarized structure.
摘要:
Semiconductor structure includes an insulator layer having at least one interconnect feature and at least one gap formed in the insulator layer spanning more than a minimum spacing of interconnects.
摘要:
An interconnect structure having partially self aligned vias with an interlayer dielectric layer on a substrate, containing at least two conducting metal lines that traverse parallel to the substrate and at least two conducting metal vias that are orthogonal to the substrate. A method of producing the self aligned vias by depositing an interlayer dielectric layer onto a substrate, depositing at least one hardmask onto the interlayer dielectric layer, lithographically forming a via pattern with elongated via features and lithographically forming a line pattern in either order, then either transferring the line patterns first into the interlayer dielectric layer forming line features or transferring the via pattern first into the interlayer dielectric layer as long as the patterns overlap to forming self aligned via features, depositing conducting metals and filling regions corresponding to the line and via features, and planarizing and removing excess metal from the line and via features.
摘要:
A method for forming a self aligned pattern on an existing pattern on a substrate comprising applying a coating of the masking material to the substrate; and allowing at least a portion of the masking material to preferentially attach to portions of the existing pattern. The pattern is comprised of a first set of regions of the substrate having a first atomic composition and a second set of regions of the substrate having a second atomic composition different from the first composition. The first set of regions may include one or more metal elements and the second set of regions may include a dielectric. The masking material may comprise a polymer containing a reactive grafting site that selectively binds to the portions of the pattern. The masking material may include a polymer that binds to the portions of the pattern to provide a layer of functional groups suitable for polymerization initiation, a reactive molecule having functional groups suitable for polymerization propagation, or a reactive molecule, wherein reaction of the reactive molecule with the portion of the pattern generates a layer having reactive groups, which participate in step growth polymerization. Structures in accordance with the method. Compositions for practicing the method.
摘要:
A method for forming a self aligned pattern on an existing pattern on a substrate comprising applying a coating of a solution containing a masking material in a carrier, the masking material having an affinity for portions of the existing pattern; and allowing at least a portion of the masking material to preferentially assemble to the portions of the existing pattern. The pattern may be comprised of a first set of regions of the substrate having a first atomic composition and a second set of regions of the substrate having a second atomic composition different from the first composition. The first set of regions may include one or more metal elements and the second set of regions may include a dielectric. The first and second regions may be treated to have different surface properties. Structures made in accordance with the method. Compositions useful for practicing the method.