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    • 35. 发明申请
    • Multilayer gate electrode, semiconductor device having the same and method of fabricating the same
    • 多层栅电极,与其相同的半导体器件及其制造方法
    • US20070052043A1
    • 2007-03-08
    • US11516633
    • 2006-09-07
    • Tae-Ho ChaChang-Won LeeHee-Sook ParkWoong-Hee SohnByung-Hee Kim
    • Tae-Ho ChaChang-Won LeeHee-Sook ParkWoong-Hee SohnByung-Hee Kim
    • H01L29/94H01L21/3205
    • H01L21/823842H01L21/823828
    • Example embodiments relate to a multilayer gate electrode, a semiconductor device having the same and methods of fabricating the same. Other example embodiments relate to a semiconductor device with a multilayer gate electrode which is relatively stable at higher temperatures, has improved resistance characteristics and improved reliability, and methods of fabricating the same. The multilayer gate electrode may include a polycrystalline semiconductor layer on the gate insulating layer and doped with conductive type impurities, an ohmic contact layer on the polycrystalline semiconductor layer and including tungsten (W1−x) and non-tungsten metal (Mx, x=about 0.01 to about 0.55), a metal barrier layer on the ohmic contact layer and a refractory metal layer on the metal barrier layer. The semiconductor device including a conductive type transistor may include a semiconductor substrate, a conductive type source/drain region in the semiconductor substrate, a gate insulating layer on a channel region between the source/drain regions and the multilayer gate electrode.
    • 示例性实施例涉及多层栅电极,具有该多层栅电极的半导体器件及其制造方法。 其他示例性实施例涉及具有多层栅电极的半导体器件,其在较高温度下相对稳定,具有改善的电阻特性和改善的可靠性,及其制造方法。 多层栅电极可以包括在栅极绝缘层上并掺杂有导电类型杂质的多晶半导体层,多晶半导体层上的欧姆接触层,并且包括钨(W 1-x N) 钨金属(M x x x,x =约0.01至约0.55),欧姆接触层上的金属阻挡层和金属阻挡层上的难熔金属层。 包括导电型晶体管的半导体器件可以包括半导体衬底,半导体衬底中的导电型源极/漏极区域,在源极/漏极区域和多层栅极电极之间的沟道区域上的栅极绝缘层。
    • 40. 发明申请
    • Method for forming contact having low resistivity using porous plug and method for forming semiconductor devices using the same
    • 使用多孔塞形成具有低电阻率的接触的方法和使用其形成半导体器件的方法
    • US20050054183A1
    • 2005-03-10
    • US10895190
    • 2004-07-19
    • Hee-Sook Park
    • Hee-Sook Park
    • H01L21/28H01L21/768H01L21/8242H01L27/105H01L21/8238H01L21/3205H01L21/4763
    • H01L27/10855H01L21/76802H01L21/76808H01L27/105H01L27/10894
    • A method for forming a contact of a semiconductor device is disclosed. A first interlevel dielectric (ILD) layer is formed on a conductive region, e.g., an active region. The first ILD layer is etched to form a first contact hole therein to expose the conductive region. The first contact hole is filled with a porous layer having a high etch selectivity with respect to the first ILD layer to form a porous plug therein. Next, a second ILD layer is formed overlying the porous plug. The second ILD layer is etched to form a second contact hole therein to expose the porous plug. The porous plug in the first contact hole is removed. The first and second contact holes are filled with a conductive material to form a contact plug. During this contact formation process, the active region or the conductive region of the semiconductor substrate can be protected with the porous plug. Thus, the electrical characteristics degradation caused by dopant diffusion resulting from a thermal process during contact formation can be avoided.
    • 公开了一种用于形成半导体器件的接触的方法。 在导电区域(例如有源区)上形成第一层间电介质(ILD)层。 蚀刻第一ILD层以在其中形成第一接触孔以暴露导电区域。 第一接触孔填充有相对于第一ILD层具有高蚀刻选择性的多孔层,以在其中形成多孔塞。 接下来,形成覆盖多孔塞的第二ILD层。 蚀刻第二ILD层以在其中形成第二接触孔以暴露多孔塞。 去除第一接触孔中的多孔塞。 第一和第二接触孔填充有导电材料以形成接触塞。 在该接触形成过程中,半导体衬底的有源区或导电区可以用多孔插塞保护。 因此,可以避免在接触形成期间由热处理引起的掺杂剂扩散引起的电特性劣化。