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    • 4. 发明授权
    • Method of manufacturing three dimensional semiconductor memory device
    • 制造三维半导体存储器件的方法
    • US09064736B2
    • 2015-06-23
    • US14248003
    • 2014-04-08
    • Joon-Suk LeeWoong LeeHun-Hyeong LimKi-Hyun Hwang
    • Joon-Suk LeeWoong LeeHun-Hyeong LimKi-Hyun Hwang
    • H01L21/311H01L27/115
    • H01L27/11578H01L27/1157H01L27/11582
    • A method of manufacturing a three-dimensional semiconductor memory device is provided. The method includes alternately stacking a first insulation film, a first sacrificial film, alternating second insulation films and second sacrificial films, a third sacrificial film and a third insulation film on a substrate. A channel hole is formed to expose a portion of the substrate while passing through the first insulation film, the first sacrificial film, the second insulation films, the second sacrificial films, the third sacrificial film and the third insulation film. The method further includes forming a semiconductor pattern on the portion of the substrate exposed in the channel hole by epitaxial growth. Forming the semiconductor pattern includes forming a lower epitaxial film, doping an impurity into the lower epitaxial film, and forming an upper epitaxial film on the lower epitaxial film. Forming the lower epitaxial film, doping the impurity into the lower epitaxial film and forming the upper epitaxial film are all performed in-situ, and the semiconductor pattern includes a doped region and an undoped region.
    • 提供一种制造三维半导体存储器件的方法。 该方法包括在基板上交替堆叠第一绝缘膜,第一牺牲膜,交替的第二绝缘膜和第二牺牲膜,第三牺牲膜和第三绝缘膜。 形成通道孔,以在穿过第一绝缘膜,第一牺牲膜,第二绝缘膜,第二牺牲膜,第三牺牲膜和第三绝缘膜的同时暴露衬底的一部分。 该方法还包括通过外延生长在暴露在通道孔中的衬底的部分上形成半导体图案。 形成半导体图案包括形成下部外延膜,将杂质掺杂到下部外延膜中,以及在下部外延膜上形成上部外延膜。 形成下部外延膜,将杂质掺杂到下部外延膜中并形成上部外延膜全部原位进行,并且半导体图案包括掺杂区域和未掺杂区域。
    • 7. 发明申请
    • Gate of a transistor and method of forming the same
    • 晶体管的栅极及其形成方法
    • US20110045667A1
    • 2011-02-24
    • US12926151
    • 2010-10-28
    • Jin-Gyun KimKi-Hyun HwangSang-Ryol Yang
    • Jin-Gyun KimKi-Hyun HwangSang-Ryol Yang
    • H01L21/28
    • H01L21/823842H01L21/82345H01L21/823456H01L21/82385
    • A gate of a transistor includes a gate oxide layer formed on a semiconductor device, a first conductive layer pattern including polysilicon doped with boron and formed on the gate oxide layer, a diffusion preventing layer pattern including amorphous silicon formed by a chemical vapor deposition process using a reaction gas having trisilane (Si3H8) and formed on the first conductive layer pattern, and a second conductive layer pattern including metal silicide and formed on the diffusion preventing layer pattern. Since a gate of PMOS transistor includes a diffusion preventing layer having an excellent surface morphology, diffusion of impurities is sufficiently prevented. Thus, the threshold voltage of PMOS transistor may be reduced and threshold voltage distribution may be improved.
    • 晶体管的栅极包括形成在半导体器件上的栅极氧化层,包含掺杂有硼的多晶硅并形成在栅极氧化物层上的第一导电层图案,包括通过化学气相沉积工艺形成的非晶硅的扩散防止层图案,其使用 形成在第一导电层图案上的具有丙硅烷(Si 3 H 8)的反应气体和形成在扩散防止层图案上的包含金属硅化物的第二导电层图案。 由于PMOS晶体管的栅极包括具有优异表面形态的扩散防止层,因此充分防止了杂质的扩散。 因此,可以降低PMOS晶体管的阈值电压,并且可以提高阈值电压分布。