Transistor and methods of forming transistors

    公开(公告)号:US10923593B1

    公开(公告)日:2021-02-16

    申请号:US16536479

    申请日:2019-08-09

    Abstract: A transistor comprises a top source/drain region, a bottom source/drain region, a channel region vertically between the top and bottom source/drain regions, and a gate operatively laterally-adjacent the channel region. An upper material is directly above a lower material. The upper material is in at least one of the top source/drain region, the bottom source/drain region, and the channel region. The lower material is in at least one of the top source/drain region, the bottom source/drain region, and the channel region. The upper material comprises 1 atomic percent to 10 atomic percent elemental-form H and 0 total atomic percent to less than 0.1 total atomic percent of one or more noble elements. The lower material comprises 0 atomic percent to less than 1 atomic percent elemental-form H and 0.1 total atomic percent to 10 total atomic percent of one or more noble elements. Other embodiments, including method, are disclosed.

    SEMICONDUCTOR STRUCTURE FORMATION
    14.
    发明申请

    公开(公告)号:US20200243528A1

    公开(公告)日:2020-07-30

    申请号:US16258987

    申请日:2019-01-28

    Abstract: Methods, apparatuses, and systems related to reduction of tapering on a sidewall of an opening are described. An example method includes forming a silicate material comprising a gradient borophosphosilicate glass (BPSG) stack on a semiconductor structure. The example method further includes etching a portion of the silicate material to form an opening within the silicate material having sidewalls, wherein the gradient B SPG stack comprises varying concentrations of boron and phosphorous to reduce tapering of the sidewalls in response to the etching.

    Devices and methods including an etch stop protection material

    公开(公告)号:US10573721B2

    公开(公告)日:2020-02-25

    申请号:US15470617

    申请日:2017-03-27

    Abstract: Protective dielectrics are discussed generally herein. In one or more embodiments, a three-dimensional vertical memory may include a protective dielectric material. A device may include an etch stop material, a first control gate (CG) over the etch stop material, a first CG recess adjacent the first CG, a trench adjacent the first CG recess, and an at least partially oxidized polysilicon on at least a portion of the etch stop material. The at least partially oxidized polysilicon may line a sidewall of the trench and may line the first CG recess.

    SINGLE-CRYSTAL TRANSISTORS FOR MEMORY DEVICES

    公开(公告)号:US20250142909A1

    公开(公告)日:2025-05-01

    申请号:US19008075

    申请日:2025-01-02

    Abstract: Methods, systems, and devices for single-crystal transistors for memory devices are described. In some examples, a cavity may be formed through at least a portion of one or more dielectric materials, which may be deposited above a deck of memory cells. The cavity may include a taper, such as a taper toward a point, or a taper having an included angle that is within a range, or a taper from a cross-sectional area to some fraction of the cross-sectional area, among other examples. A semiconductor material may be deposited in the cavity and above the one or more dielectric materials, and formed in a single crystalline arrangement based on heating and cooling the deposited semiconductor material. One or more portions of a transistor, such as a channel portion of a transistor, may be formed at least in part by doping the single crystalline arrangement of the semiconductor material.

    Single-crystal transistors for memory devices

    公开(公告)号:US12224310B2

    公开(公告)日:2025-02-11

    申请号:US18531525

    申请日:2023-12-06

    Abstract: Methods, systems, and devices for single-crystal transistors for memory devices are described. In some examples, a cavity may be formed through at least a portion of one or more dielectric materials, which may be deposited above a deck of memory cells. The cavity may include a taper, such as a taper toward a point, or a taper having an included angle that is within a range, or a taper from a cross-sectional area to some fraction of the cross-sectional area, among other examples. A semiconductor material may be deposited in the cavity and above the one or more dielectric materials, and formed in a single crystalline arrangement based on heating and cooling the deposited semiconductor material. One or more portions of a transistor, such as a channel portion of a transistor, may be formed at least in part by doping the single crystalline arrangement of the semiconductor material.

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