DIELECTRIC INTERFACE FILMS AND METHODS THEREFOR
    10.
    发明申请
    DIELECTRIC INTERFACE FILMS AND METHODS THEREFOR 审中-公开
    电介质接口膜及其方法

    公开(公告)号:WO0231875A3

    公开(公告)日:2003-01-09

    申请号:PCT/US0142167

    申请日:2001-09-11

    Abstract: An ultrathin aluminum oxide and lanthanide layers, particularly formed by an atomic layer deposition (ALD) type process, serve as interface layers between two or more materials. The interface layers can prevent oxidation of a substrate and can prevent diffusion of molecules between the materials. In the illustrated embodiments, a high-k dielectric material is sandwiched between two layers of aluminum oxide or lanthanide oxide in the formation of a transistor gate dielectric or a memory cell dielectric. Aluminum oxides can serve as a nucleation layer with less than a full monolayer of aluminum oxide. One monolayer or greater can also serve as a diffusion barrier, protecting the substrate from oxidation and the high-k dielectric from impurity diffusion. Nanolaminates can be formed with multiple alternating interface layers and high-k layers, where intermediate interface layers can break up the crystal structure of the high-k materials and lower leakage levels.

    Abstract translation: 特别是通过原子层沉积(ALD)型方法形成的超薄氧化铝和镧系元素层用作两种或多种材料之间的界面层。 界面层可以防止基底的氧化并且可以防止分子在材料之间的扩散。 在所示实施例中,在形成晶体管栅极电介质或存储单元电介质时,高k介电材料夹在两层氧化铝或镧系元素氧化物之间。 氧化铝可用作具有少于全部氧化铝单层的成核层。 一个或多个单层也可以用作扩散阻挡层,保护基底免受氧化和高k电介质的杂质扩散。 纳米材料可以形成多个交替界面层和高k层,其中中间界面层可以分解高k材料的晶体结构并降低泄漏水平。

Patent Agency Ranking