Ligand-capped main group nanoparticles as high absorption extreme ultraviolet lithography resists

    公开(公告)号:US11320734B2

    公开(公告)日:2022-05-03

    申请号:US16316594

    申请日:2016-09-30

    申请人: Intel Corporation

    摘要: A photosensitive composition including metal nanoparticles capped with an organic ligand, wherein the metal particles includes a metal that absorbs light in the extreme ultraviolet spectrum. A method including synthesizing metal particles including a diameter of 5 nanometers or less, wherein the metal particles includes a metal that absorbs light in the extreme ultraviolet spectrum; and capping the metal particles with an organic ligand. A method including depositing a photosensitive composition on a semiconductor substrate, wherein the photosensitive composition includes metal nanoparticles capped with an organic ligand and the nanoparticles include a metal that absorbs light in the extreme ultraviolet spectrum; exposing the photosensitive composition to light in an ultraviolet spectrum through a mask including a pattern; and transferring the mask pattern to the photosensitive composition.

    Selective metal removal for conductive interconnects in integrated circuitry

    公开(公告)号:US11158515B2

    公开(公告)日:2021-10-26

    申请号:US16334324

    申请日:2016-09-30

    申请人: Intel Corporation

    摘要: 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.