Three layer aluminum deposition process for high aspect ratio CL contacts
    9.
    发明授权
    Three layer aluminum deposition process for high aspect ratio CL contacts 失效
    三层铝沉积工艺,用于高纵横比CL接触

    公开(公告)号:US06794282B2

    公开(公告)日:2004-09-21

    申请号:US10305063

    申请日:2002-11-27

    IPC分类号: H01L2144

    CPC分类号: H01L27/10888 H01L21/76882

    摘要: A method of forming a semiconductor device includes providing a semiconductor device including a conductor formed thereon. A dielectric layer is formed over the conductor and a recess is formed in the dielectric layer by removing a portion of the dielectric layer to expose at least a portion of the conductor. A first layer of aluminum is deposited over the top surface of the dielectric, along the sidewalls of the dielectric layer and over the exposed portion of the conductor without altering the temperature of the semiconductor device. A second layer of aluminum is deposited over the first layer of aluminum at a temperature greater than about 300° C. A third layer of aluminum is deposited over the second layer of aluminum so as to completely fill the recess in the dielectric layer. The third layer of aluminum is slow deposited at a temperature greater than about 300° C.

    摘要翻译: 形成半导体器件的方法包括提供包括形成在其上的导体的半导体器件。 在导体上形成电介质层,并且通过去除电介质层的一部分以露出导体的至少一部分,在电介质层中形成凹陷。 沿着电介质层的侧壁并在导体的暴露部分之上沉积在电介质的顶表面上的第一层铝,而不改变半导体器件的温度。 在大于约300℃的温度下,在第一层铝上沉积第二层铝。第三层铝沉积在第二层铝上,以便完全填充介电层中的凹槽。 第三层铝在大于约300℃的温度下缓慢沉积