IMPROVED SILICIDE FORMATION BY IMPROVED SIGE FACETING
    3.
    发明公开
    IMPROVED SILICIDE FORMATION BY IMPROVED SIGE FACETING 审中-公开
    VERBESSERTE SILICIDFORMIERUNG DURCH VERBESSERTE SIGE-FACETTIERUNG

    公开(公告)号:EP3036769A1

    公开(公告)日:2016-06-29

    申请号:EP14838365.6

    申请日:2014-08-22

    IPC分类号: H01L27/088 H01L21/336

    摘要: In described examples, an integrated circuit (100) includes semiconductor material (104). A first gate structure (108) includes a gate dielectric layer (112) and a gate (114). A second gate structure (118) includes a gate (122) that does not overlap a sidewall (142) of a field oxide (106). An SiGe source/drain region (138) is between the first and second gate structures (108, 118), such that a top edge (140) does not extend more than one third of a depth of the SiGe source/drain region (138) from a top surface of the semiconductor material (104). Dielectric spacers (124, 152) are adjacent to lateral surfaces of the gate (122), extending onto the SiGe source/drain region (138). A contact (160) is between the first and second gate structures (108, 118), such that at least half of a bottom of the contact (160) directly contacts metal silicide (156) on the SiGe source/drain region (138).

    摘要翻译: 集成电路包括PMOS栅极结构和相邻场氧化物上的栅极结构。 在场氧化物上的栅极结构上形成外延硬掩模,使得外延硬掩模与PMOS源极/漏极区域中的半导体材料重叠。 SiGe半导体材料在源极/漏极区域中外延形成,使得在场氧化物处的SiGe半导体材料的顶部边缘不会延伸超过邻接该场的源极/漏极区域中的SiGe的深度的三分之一 氧化物。 场氧化物上的栅极结构的侧表面上的介电隔离物延伸到SiGe上; 至少有三分之一的SiGe被暴露。 金属硅化物覆盖SiGe的顶表面的至少三分之一。 触点具有至少一半的触点的底部直接接触SiGe上的金属硅化物。