Plasma impurification of a metal gate in a semiconductor fabrication process
    5.
    发明申请
    Plasma impurification of a metal gate in a semiconductor fabrication process 审中-公开
    半导体制造工艺中的金属栅极的等离子体杂质化

    公开(公告)号:US20060084217A1

    公开(公告)日:2006-04-20

    申请号:US10969486

    申请日:2004-10-20

    IPC分类号: H01L21/4763

    摘要: A semiconductor fabrication includes forming a gate dielectric overlying a semiconductor substrate and depositing a metal gate film overlying the gate dielectric. Following deposition of the metal gate film, nitrogen, carbon, and/or oxygen is introduced into the metal gate film by exposing the metal gate film to a nitrogen, carbon, and/or oxygen bearing plasma. Thereafter, the nitrogenated/oxygenated/carbonated metal gate film is patterned to form a transistor gate electrode. Depositing the metal gate film is preferably done with a low energy process such as atomic layer deposition (ALD) or metal organic chemical vapor deposition (MOCVD) to reduce damage to the underlying gate dielectric. The metal gate film for NMOS devices is preferably a compound of nitrogen and Ti, W, or Ta. A second metal gate film may be used for PMOS devices. This second metal gate film is preferably a compound of oxygen and Ir, Ru, Mo, or Re.

    摘要翻译: 半导体制造包括形成覆盖在半导体衬底上的栅极电介质并沉积覆盖栅极电介质的金属栅极膜。 在金属栅极膜沉积之后,通过将金属栅极膜暴露于氮,碳和/或含氧等离子体,将氮,碳和/或氧引入金属栅极膜。 此后,对氮化/氧化/碳酸化的金属栅极膜进行构图以形成晶体管栅电极。 优选地,通过诸如原子层沉积(ALD)或金属有机化学气相沉积(MOCVD)的低能量过程来沉积金属栅极膜以减少对下面的栅极电介质的损伤。 用于NMOS器件的金属栅极膜优选为氮和Ti,W或Ta的化合物。 PMOS器件可以使用第二金属栅极膜。 该第二金属栅极膜优选为氧和Ir,Ru,Mo或Re的化合物。

    Method for forming a deposited oxide layer
    6.
    发明申请
    Method for forming a deposited oxide layer 有权
    形成沉积氧化物层的方法

    公开(公告)号:US20070202708A1

    公开(公告)日:2007-08-30

    申请号:US11364128

    申请日:2006-02-28

    申请人: Tien Luo Rajesh Rao

    发明人: Tien Luo Rajesh Rao

    IPC分类号: H01L21/31 H01L21/469

    摘要: An insulating layer formed by deposition is annealed in the presence of radical oxygen to reduce bond defects. A substrate is provided. An oxide layer is deposited overlying the substrate. The oxide layer has a plurality of bond defects. The oxide layer is annealed in the presence of radical oxygen to modify a substantial portion of the plurality of bond defects by using oxygen atoms. The anneal, in one form, is an in-situ steam generation (ISSG) anneal. In one form, the insulating layer overlies a layer of charge storage material, such as nanoclusters, that form a gate structure of a semiconductor storage device. The ISSG anneal repairs bond defects by oxidizing defective silicon bonds in the oxide layer when the oxide layer is silicon dioxide.

    摘要翻译: 通过沉积形成的绝缘层在自由基氧的存在下退火以减少键合缺陷。 提供基板。 沉积在衬底上的氧化物层。 氧化物层具有多个键合缺陷。 氧化层在自由基氧的存在下进行退火,通过使用氧原子来修饰多个键缺陷的大部分。 一种形式的退火是原位蒸汽发生(ISSG)退火。 在一种形式中,绝缘层覆盖形成半导体存储装置的栅极结构的诸如纳米团簇的电荷存储材料层。 当氧化物层是二氧化硅时,ISSG退火通过氧化氧化物层中的有缺陷的硅键来修复接合缺陷。