Semiconductor device and method of fabricating the same
    9.
    发明授权
    Semiconductor device and method of fabricating the same 有权
    半导体装置及其制造方法

    公开(公告)号:US08841733B2

    公开(公告)日:2014-09-23

    申请号:US13109599

    申请日:2011-05-17

    摘要: A method of fabricating a semiconductor device includes following steps. A substrate is provided, wherein a first dielectric layer having a trench therein is formed on the substrate, a source/drain region is formed in the substrate at two sides of the trench, and a second dielectric layer is formed on the substrate in the trench. A first physical vapor deposition process is performed to form a Ti-containing metal layer in the trench. A second physical vapor deposition process is performed to form an Al layer on the Ti-containing metal layer in the trench. A thermal process is performed to anneal the Ti-containing metal layer and the Al layer so as to form a work function metal layer. A metal layer is formed to fill the trench.

    摘要翻译: 制造半导体器件的方法包括以下步骤。 提供了一种衬底,其中在衬底上形成有沟槽的第一电介质层,在沟槽的两侧在衬底中形成源极/漏极区,并且在沟槽中的衬底上形成第二电介质层 。 进行第一物理气相沉积工艺以在沟槽中形成含Ti金属层。 进行第二物理气相沉积工艺以在沟槽中的含Ti金属层上形成Al层。 进行热处理以使含Ti金属层和Al层退火以形成功函数金属层。 形成金属层以填充沟槽。