High performance MIS capacitor with HfO2 dielectric
    1.
    发明授权
    High performance MIS capacitor with HfO2 dielectric 失效
    具有HfO2电介质的高性能MIS电容器

    公开(公告)号:US07094712B2

    公开(公告)日:2006-08-22

    申请号:US10793818

    申请日:2004-03-08

    IPC分类号: H01L21/31

    摘要: Disclosed is a method for forming metal oxide dielectric layers, more particularly HfO2 dielectric layers, using an atomic layer deposition (ALD) method in which a series of thin intermediate layers are formed and treated with one or more oxidizers and nitrogents before the next intermediate layer is formed on the substrate. The intermediate oxidation treatments reduce the number of organic contaminants incorporated into the metal oxide layer from the organometallic precursors to produce a dielectric layer having improved current leakage characteristics. The dielectric layers formed in this manner remain susceptible to crystallization if exposed to temperatures much above 550° C., so subsequent semiconductor manufacturing processes should be modified or eliminated to avoid such temperatures or limit the duration at such temperatures to maintain the performance of the dielectric materials.

    摘要翻译: 公开了一种使用原子层沉积(ALD)方法形成金属氧化物电介质层,更具体地是HfO 2 电介质层的方法,其中形成一系列薄的中间层并用一个或多个 在下一个中间层之前形成氧化剂和氮。 中间氧化处理减少了从有机金属前体引入到金属氧化物层中的有机污染物的数量,以产生具有改善的电流泄漏特性的电介质层。 如果暴露在高于550℃的温度下,以这种方式形成的电介质层仍然易于结晶,因此随后的半导体制造工艺应当被修改或消除以避免这种温度或限制在这样的温度下的持续时间以保持电介质的性能 材料

    Apparatus for forming dielectric structures in integrated circuits
    9.
    发明申请
    Apparatus for forming dielectric structures in integrated circuits 审中-公开
    用于在集成电路中形成电介质结构的装置

    公开(公告)号:US20060084225A1

    公开(公告)日:2006-04-20

    申请号:US11291191

    申请日:2005-12-01

    IPC分类号: H01L21/8242

    摘要: In some embodiments, a multi-layer dielectric structure, such as a capacitor dielectric region, is formed by forming a first dielectric layer on a substrate according to a CVD process and forming a second dielectric layer directly on the first dielectric layer according to an ALD process. In further embodiments, a multi-layer dielectric structure is formed by forming a first dielectric layer on a substrate according to an ALD process and forming a second dielectric layer directly on the first dielectric layer according to a CVD process. The CVD-formed layers may comprise one selected from the group consisting of SiO2, Si3N3, Ta2O5, HfO2, ZrO2, TiO2, Y2O3, Pr2O3, La2O3, Nb2O5, SrTiO3 (STO), BaSrTiO3 (BST) and PbZrTiO3 (PZT). The ALD-formed layers may comprise one selected from the group consisting of SiO2, Si3N3, Al2O3, Ta2O5, HfO2, ZrO2, TiO2, Y2O3, Pr2O3, La2O3, Nb2O5, SrTiO3 (STO), BaSrTiO3 (BST) and PbZrTiO3 (PZT).

    摘要翻译: 在一些实施例中,通过根据CVD工艺在衬底上形成第一电介质层并根据ALD在第一电介质层上直接形成第二电介质层来形成诸如电容器电介质区域的多层电介质结构 处理。 在另外的实施例中,通过根据ALD工艺在衬底上形成第一电介质层并根据CVD工艺在第一电介质层上直接形成第二电介质层来形成多层电介质结构。 CVD形成的层可以包括从由SiO 2,Si 3 N 3 N 3,Ta 2 O 3, O 2,HfO 2,ZrO 2,TiO 2,Y 2,N 2, 3 O 3,3/3,3,3,3,3,3,3,3,3, (STO),BaSrTiO 3(BST)和PbZrTiO 3(BST)3(S0) / SUB>(PZT)。 ALD形成的层可以包括从由SiO 2,Si 3 N 3 N 3,Al 2 O 3, 3,O 3,O 2 O 5,HfO 2,ZrO 2,N 2, ,TiO 2,Y 2 O 3,Pr 2 O 3,La Nb 2 O 3,SrTiO 3(STO),N 2 O 3, BaSrTiO 3(BST)和PbZrTiO 3 3(PZT)。