Abstract:
Photoresists with electron-activated photosensitizers for confined patterning lithography, e.g., for fabricating back end of line (BEOL) interconnects, and the resulting structures, are described. In an example, an integrated circuit structure includes a first layer of an interconnect structure above a substrate, the first layer including a first grating of alternating metal lines and dielectric lines in a first direction. A second layer of the interconnect structure is above the first layer. The second layer includes a second grating of alternating metal lines and dielectric lines in a second direction, perpendicular to the first direction. A region of dielectric material is between the metal lines of the first grating and the metal lines of the second grating. The region of dielectric material includes a cross-linked photolyzable material having a bottom and sidewall surfaces lined with a layer including electron-activated photosensitizers.
Abstract:
Advanced lithography techniques including sub-10nm pitch patterning and structures resulting therefrom are described. Self-assembled devices and their methods of fabrication are described.
Abstract:
Selective hardmask-based approaches for conductive via fabrication are described. In an example, an integrated circuit structure includes a plurality of conductive lines in an inter-layer dielectric (ILD) layer above a substrate. The plurality of conductive lines includes alternating non-recessed conductive lines and recessed conductive lines. The non-recessed conductive lines are substantially co-planar with the ILD layer, and the recessed conductive lines are recessed relative to an uppermost surface of the ILD layer. A dielectric capping layer is in recess regions above the recessed conductive lines. A hardmask layer is over the non-recessed conductive lines but not over the dielectric capping layer of the recessed conductive lines. The hardmask layer differs in composition from the dielectric capping layer. A conductive via is in an opening in the dielectric capping layer and on one of the recessed conductive lines. A portion of the conductive via is on a portion of the hardmask layer.
Abstract:
Techniques for selectively removing a metal or conductive material during processing of a semiconductor die for high-voltage applications are provided. In some embodiments, the techniques treat a metallized semiconductor die to transfer a feature from a patterned photoresist layer deposited on the metallized semiconductor die. In addition, the patterned metallized semiconductor die can be subjected to an etch process to remove an amount of metal according to the feature in the pattern, resulting in a treated metallized semiconductor die that defines an opening adjacent to at least a pair of neighboring metal interconnects in the die. The treated metallized semiconductor die can be further treated to backfill the opening with a dielectric material, resulting in a metallized semiconductor die having a backfilled dielectric member. Such a metallized semiconductor die can be further processed according to a process of record until metallization, after which additional selective removal of another amount of metal can be implemented. Semiconductor dies having neighboring metal interconnects separated by backfilled dielectric regions also are provided.
Abstract:
Two-stage bake photoresists with releasable quenchers for fabricating back end of line (BEOL) interconnects are described. In an example, a photolyzable composition includes an acid-deprotectable photoresist material having substantial transparency at a wavelength, a photo-acid-generating (PAG) component having substantial transparency at the wavelength, and a base-generating component having substantial absorptivity at the wavelength.
Abstract:
A conductive route structure may be formed comprising a conductive trace and a conductive via, wherein the conductive via directly contacts the conductive trace. In one embodiment, the conductive route structure may be formed by forming a dielectric material layer on the conductive trace. A via opening may be formed through the dielectric material layer to expose a portion of the conductive trace and a blocking layer may be from only on the exposed portion of the conductive trace. A barrier line may be formed on sidewalls of the via opening and the blocking layer may thereafter be removed. A conductive via may then be formed within the via opening, wherein the conductive via directly contacts the conductive trace.
Abstract:
Methods of selectively depositing high-K gate dielectric on a semiconductor structure are disclosed. The method includes providing a semiconductor structure disposed above a semiconductor substrate. The semiconductor structure is disposed beside an isolation sidewall. A sacrificial blocking layer is then selectively deposited on the isolation sidewall and not on the semiconductor structure. Thereafter, a high-K gate dielectric is deposited on the semiconductor structure, but not on the sacrificial blocking layer. Properties of the sacrificial blocking layer prevent deposition of oxide material on its surface. A thermal treatment is then performed to remove the sacrificial blocking layer, thereby forming a high-K gate dielectric only on the semiconductor structure.
Abstract:
Disclosed herein are methods for manufacturing IC components using bottom-up fill of openings by infiltrating one or more fluid precursors for forming dielectric materials into a solid host matrix provided within the openings. One exemplary method includes providing a host matrix within a plurality of openings in a structure, infiltrating the host matrix within the openings with one or more fluid precursors for forming a dielectric material, and, following the infiltration, removing at least a portion of the host matrix. Assemblies and devices manufactured using such methods are disclosed as well.
Abstract:
Disclosed herein are methods for manufacturing devices using nanotubes, such as e.g. carbon nanotubes or boron nitride nanotubes, as a guide for selective deposition of materials. For example, in some embodiments, the methods include growing nanotubes on one or more areas on a surface of a substrate which are referred to herein as "nanotube growth areas," followed by depositing one or more materials over or around the nanotubes and then removing either one or more of the deposited material, or the nanotubes. Assemblies and devices manufactured using such methods are disclosed as well. Such assemblies and devices may advantageously be used in semiconductor ICs.
Abstract:
Disclosed herein are methods for manufacturing a metallization stack including a plurality of electrically conductive interconnects by subtractive metal spacer based deposition, and related semiconductor devices. For example, in some embodiments, a method of forming a semiconductor device may include providing a pattern of sacrificial elements over an interconnect support layer, depositing an electrically conductive material on sidewalls of the sacrificial elements, and removing the sacrificial elements so that the remaining portions of the electrically conductive material form a pattern of electrically conductive elements which can serve as interconnects of a metallization stack of the semiconductor device.