Enhanced plating bath and additive chemistries for cobalt plating

    公开(公告)号:US11118278B2

    公开(公告)日:2021-09-14

    申请号:US16656026

    申请日:2019-10-17

    Abstract: Implementations of the disclosure may include methods of electroplating features formed on a semiconductor device, such as the trenches and vias formed by single or dual Damascene processes using a cobalt plating bath. The cobalt electroplating bath may contain “additive packages” or “additive systems” that include a combination of additives in certain ratios that facilitate the metal filling of high aspect ratio sub-micrometer features. Implementations of the disclosure provide new cobalt plating bath methods and chemistries and that include alkyl modified imidazoles, imidazolines, and imidazolidines suppressor compounds.

    Magnetized substrate carrier apparatus with shadow mask for deposition

    公开(公告)号:US11056277B2

    公开(公告)日:2021-07-06

    申请号:US16289328

    申请日:2019-02-28

    Abstract: Methods and apparatus for a magnetized substrate carrier apparatus are described herein. In some embodiments, a substrate carrier apparatus includes: a carrier plate having a support surface to support a substrate, a mask assembly disposed above the support surface, wherein the mask assembly includes an annular frame and a shadow mask disposed within the annular frame, and wherein the shadow mask includes one or more openings arranged in a predetermined pattern and disposed through the shadow mask, and one or more magnets disposed on or embedded within at least one of the carrier plate and the shadow mask to create a magnetic field above the support surface.

    METHODS AND SYSTEMS FOR FORMING FILMS ON SUBSTRATES

    公开(公告)号:US20200378000A1

    公开(公告)日:2020-12-03

    申请号:US16854893

    申请日:2020-04-21

    Abstract: One or more embodiments described herein generally relate to methods and systems for forming films on substrates in semiconductor processes. In embodiments described herein, a process system includes different materials each contained in separate ampoules. Each material is flowed into a separate portion of a showerhead contained within a process chamber via a heated gas line. From the showerhead, each material is flowed on to a substrate that sits on the surface of a rotating pedestal. Controlling the mass flow rate out of the showerhead and the rotation rate of the pedestal helps result in films with desirable material domain sizes to be deposited on the substrate.

    SELECTIVE COBALT REMOVAL FOR BOTTOM UP GAPFILL

    公开(公告)号:US20190122923A1

    公开(公告)日:2019-04-25

    申请号:US16229710

    申请日:2018-12-21

    Abstract: Exemplary methods for removing cobalt material may include flowing a chlorine-containing precursor into a processing region of a semiconductor processing chamber. The methods may include forming a plasma of the chlorine-containing precursor to produce plasma effluents. The methods may also include contacting an exposed region of cobalt with the plasma effluents. The exposed region of cobalt may include an overhang of cobalt on a trench defined on a substrate. The plasma effluents may produce cobalt chloride at the overhang of cobalt. The methods may include flowing a nitrogen-containing precursor into the processing region of the semiconductor processing chamber. The methods may further include contacting the cobalt chloride with the nitrogen-containing precursor. The methods may also include recessing the overhang of cobalt.

    Selective cobalt removal for bottom up gapfill

    公开(公告)号:US10163696B2

    公开(公告)日:2018-12-25

    申请号:US15349460

    申请日:2016-11-11

    Abstract: Exemplary methods for removing cobalt material may include flowing a chlorine-containing precursor into a processing region of a semiconductor processing chamber. The methods may include forming a plasma of the chlorine-containing precursor to produce plasma effluents. The methods may also include contacting an exposed region of cobalt with the plasma effluents. The exposed region of cobalt may include an overhang of cobalt on a trench defined on a substrate. The plasma effluents may produce cobalt chloride at the overhang of cobalt. The methods may include flowing a nitrogen-containing precursor into the processing region of the semiconductor processing chamber. The methods may further include contacting the cobalt chloride with the nitrogen-containing precursor. The methods may also include recessing the overhang of cobalt.

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