Selective deposition of silicon nitride

    公开(公告)号:US11380539B2

    公开(公告)日:2022-07-05

    申请号:US16789106

    申请日:2020-02-12

    Applicant: ENTEGRIS, INC.

    Abstract: Certain embodiments of the invention utilize low temperature atomic layer deposition methodology to form material containing silicon and nitrogen (e.g., silicon nitride). The atomic layer deposition uses silicon tetraiodide (SiI4) or disilicon hexaiodide (Si2I6) as one precursor and uses a nitrogen-containing material such as ammonia as another precursor. In circumstances where a selective deposition of silicon nitride is desired to be deposited over silicon dioxide, the substrate surface is first treated with ammonia plasma.

    VAPOR PHASE ETCHING OF HAFNIA AND ZIRCONIA

    公开(公告)号:US20170352549A1

    公开(公告)日:2017-12-07

    申请号:US15613773

    申请日:2017-06-05

    Applicant: Entegris, Inc.

    Inventor: Bryan C. Hendrix

    CPC classification number: H01L21/31122

    Abstract: A method is described for vapor phase etching of oxide material including at least one of hafnia (HfO2) and zirconia (ZrO2), in the absence of plasma exposure of the oxide material. The method involves contacting the oxide material with an etching medium including at least one of phosphorus chloride and tungsten chloride under conditions producing a removable fluid reaction product, and removing the removable fluid reaction product. The etching process may be controllably carried out by use of pressure swings, temperature swings, and/or modulation of partial pressure of Hf or Zr chloride in the reaction, e.g., to achieve precision etch removal in the manufacture of semiconductor devices such as 3D NAND, sub-20 nm DRAMs, and finFETs.

    SOLID PRECURSOR-BASED DELIVERY OF FLUID UTILIZING CONTROLLED SOLIDS MORPHOLOGY
    37.
    发明申请
    SOLID PRECURSOR-BASED DELIVERY OF FLUID UTILIZING CONTROLLED SOLIDS MORPHOLOGY 审中-公开
    使用固体前驱体的流体利用控制固体物质的流体

    公开(公告)号:US20140329025A1

    公开(公告)日:2014-11-06

    申请号:US14335897

    申请日:2014-07-19

    Applicant: Entegris, Inc.

    Abstract: Apparatus and method for volatilizing a source reagent susceptible to particle generation or presence of particles in the corresponding source reagent vapor, in which such particle generation or presence is suppressed by structural or processing features of the vapor generation system. Such apparatus and method are applicable to liquid and solid source reagents, particularly solid source reagents such as metal halides, e.g., hafnium chloride. The source reagent in one specific implementation is constituted by a porous monolithic bulk form of the source reagent material. The apparatus and method of the invention are usefully employed to provide source reagent vapor for applications such as atomic layer deposition (ALD) and ion implantation.

    Abstract translation: 挥发易于产生颗粒的源试剂的源试剂的装置和方法,其中通过蒸气发生系统的结构或加工特征抑制了这种颗粒产生或存在的相应源试剂蒸气。 这种装置和方法适用于液体和固体源试剂,特别是固体源试剂如金属卤化物,例如氯化铪。 一种具体实施方案中的源试剂由源试剂材料的多孔整体块形式构成。 本发明的装置和方法有用地用于提供用于例如原子层沉积(ALD)和离子注入的应用的源试剂蒸气。

    METHODS OF IMPROVING METAL OXIDE DEPOSITION WITH NITROGEN OXIDE AND RELATED SYSTEMS

    公开(公告)号:US20250079157A1

    公开(公告)日:2025-03-06

    申请号:US18819915

    申请日:2024-08-29

    Applicant: ENTEGRIS, INC.

    Abstract: Methods improving metal oxide deposition with nitrogen oxide, related devices, and related systems are provided herein. The method comprises flowing an ozone gas from an ozone generator to a deposition chamber. The method comprises flowing a nitrogen oxide gas from a first source to the deposition chamber. The method comprises flowing a first precursor gas from a second source to the deposition chamber. The method comprises exposing a substrate located in the deposition chamber to at least one of the ozone gas, the nitrogen oxide gas, the first precursor gas, or any combination thereof. The method step of exposing is sufficient to form a film having a step coverage of at least 50%. The substrate has at least one structure with an aspect ratio of at least 10:1.

    METAL GETTERS IN VAPORIZERS FOR IMPURITY REMOVAL

    公开(公告)号:US20250019822A1

    公开(公告)日:2025-01-16

    申请号:US18769237

    申请日:2024-07-10

    Applicant: ENTEGRIS, INC.

    Abstract: Metal getters in vaporizers, and related systems and methods, are provided. A vaporizer comprises a vessel having an outlet. The vessel is configured to discharge a metal halide vapor through the outlet. The vaporizer comprises a metal getter located within the vessel between the inlet and the outlet. When an oxygen-containing species is present within the vessel, an impurity content of the metal halide vapor that is discharged from the vessel is less than an impurity content of a precursor vapor that is discharged from a vessel without the metal getter.

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