Methods for growing low-resistivity tungsten for high aspect ratio and small features
    95.
    发明授权
    Methods for growing low-resistivity tungsten for high aspect ratio and small features 有权
    生长低电阻率钨用于高纵横比和小特征的方法

    公开(公告)号:US07955972B2

    公开(公告)日:2011-06-07

    申请号:US12030645

    申请日:2008-02-13

    IPC分类号: H01L21/4763

    摘要: The present invention addresses this need by providing methods for depositing low resistivity tungsten films in small features and features having high aspect ratios. The methods involve depositing very thin tungsten nucleation layers by pulsed nucleation layer (PNL) processes and then using chemical vapor deposition (CVD) to deposit a tungsten layer to fill the feature. Depositing the tungsten nucleation layer involves exposing the substrate to alternating pulses of a boron-containing reducing agent and a tungsten-containing precursor without using any hydrogen gas, e.g., as a carrier or background gas. Using this process, a conformal tungsten nucleation layer can be deposited to a thickness as small as about 10 Angstroms. The feature may then be wholly or partially filled with tungsten by a hydrogen reduction chemical vapor deposition process. Resistivities of about 14 μΩ-cm for a 500 Angstrom film may be obtained.

    摘要翻译: 本发明通过提供沉积具有高纵横比的小特征和特征的低电阻率钨膜的方法来满足这一需要。 这些方法包括通过脉冲成核层(PNL)工艺沉积非常薄的钨成核层,然后使用化学气相沉积(CVD)沉积钨层以填充该特征。 沉积钨成核层包括将基底暴露于含硼还原剂和含钨前体的交替脉冲,而不使用任何氢气,例如载体或背景气体。 使用该工艺,共形钨成核层可沉积至约10埃的厚度。 然后可以通过氢还原化学气相沉积工艺将特征全部或部分地填充钨。 对于500埃的膜可以获得约14μΩ·cm-cm的电阻率。

    METHOD FOR FORMING CU ELECTRICAL INTERCONNECTION FILM
    96.
    发明申请
    METHOD FOR FORMING CU ELECTRICAL INTERCONNECTION FILM 有权
    形成电气互连膜的方法

    公开(公告)号:US20110104890A1

    公开(公告)日:2011-05-05

    申请号:US12935746

    申请日:2009-07-14

    IPC分类号: H01L21/768

    摘要: Provided is a Cu electrical interconnection film forming method, wherein an adhesive layer (base film) having improved adhesiveness with a Cu electrical interconnection film is used, in a semiconductor device manufacturing process. After forming a barrier film on a substrate whereupon a hole or the like is formed, a PVD-Co film or a CVD-Co film or an ALD-Co film is formed on the barrier film. Then, after filling up or burying the hole or the like, which has the Co film formed on the surface, with a CVD-Cu film or a PVD-Cu film, heat treatment is performed at a temperature of 350° C. or below, and the Cu electrical interconnection film is formed.

    摘要翻译: 提供了一种Cu电互连膜形成方法,其中在半导体器件制造工艺中使用具有改善的与Cu电互连膜的粘合性的粘合剂层(基膜)。 在基板上形成阻挡膜之后,形成孔等,在阻挡膜上形成PVD-Co膜或CVD-Co膜或ALD-Co膜。 然后,在用CVD-Cu膜或PVD-Cu膜填充或埋入具有形成在表面上的Co膜的孔等之后,在350℃或更低的温度下进行热处理 ,形成Cu电互连膜。

    Low-resistance interconnects and methods of making same
    99.
    发明授权
    Low-resistance interconnects and methods of making same 有权
    低电阻互连及其制作方法

    公开(公告)号:US07863176B2

    公开(公告)日:2011-01-04

    申请号:US12119994

    申请日:2008-05-13

    IPC分类号: H01L23/52

    摘要: Devices and methods for providing low-resistance interconnects in a semiconductor device are provided. Specifically, one or more embodiments of the present invention relate to disposing a conductive material in a trench without disposing a resistive barrier material between the conductive material and the sidewalls of the trench so that the conductive material takes up the full width of the trench. For example, the trench may be disposed over one or more contacts made of a barrier material such as titanium nitride that also acts as a seed, and the conductive material may be grown on top of the titanium nitride to fill the trench.

    摘要翻译: 提供了用于在半导体器件中提供低电阻互连的装置和方法。 具体地,本发明的一个或多个实施例涉及将导电材料设置在沟槽中而不在导电材料和沟槽的侧壁之间设置电阻阻挡材料,使得导电材料占据沟槽的整个宽度。 例如,沟槽可以设置在由阻挡材料制成的一个或多个触点上,例如氮化钛也可以作为种子,并且导电材料可以在氮化钛的顶部生长以填充沟槽。