Laser thermal annealing of silicon nitride for increased density and etch selectivity
    94.
    发明授权
    Laser thermal annealing of silicon nitride for increased density and etch selectivity 有权
    氮化硅的激光热退火以提高密度和蚀刻选择性

    公开(公告)号:US06706576B1

    公开(公告)日:2004-03-16

    申请号:US10096741

    申请日:2002-03-14

    IPC分类号: H01L2100

    摘要: The density of a deposited silicon nitride layer is increased by laser thermal annealing in N2, thereby increasing etch selectivity with respect to an overlying oxide and, hence, avoiding damage to underlying silicide layers and gates. Embodiments include laser thermal annealing a silicon nitride layer deposited as an etch stop layer, e.g., in fabricating EEPROMs, to increase its density by up to about 8%, thereby increasing its etch selectivity with respect to an overlying BPSG layer to about {fraction (1/12)} to about {fraction (1/14)}.

    摘要翻译: 沉积的氮化硅层的密度通过在N 2中的激光热退火而增加,从而相对于上覆氧化物增加了蚀刻选择性,因此避免了对下面的硅化物层和栅极的损害。 实施例包括激光热退火沉积为蚀刻停止层的氮化硅层,例如在制造EEPROM中,将其密度增加高达约8%,从而将其相对于上覆的BPSG层的蚀刻选择性增加到约{部分( 1/12至约{部分(1/14。

    Method of eliminating voids in W plugs
    96.
    发明授权
    Method of eliminating voids in W plugs 失效
    消除W插头空隙的方法

    公开(公告)号:US06638861B1

    公开(公告)日:2003-10-28

    申请号:US09986263

    申请日:2001-11-08

    IPC分类号: H01L2144

    CPC分类号: C25D5/50 H01L21/76882

    摘要: Reliable contacts/vias are formed by filling an opening in a dielectric layer with W and laser thermal annealing to eliminate or significantly reduce voids. Embodiments include depositing W to fill a contact/via opening in an interlayer dielectric, laser thermal annealing in N2 to elevate the temperature of the W filling the contact/via opening and reflow the W thereby eliminating voids. Embodiments include conducting CMP either before or subsequent to laser thermal annealing.

    摘要翻译: 通过用W和激光热退火填充介电层中的开口来形成可靠的触点/通孔,以消除或显着减少空隙。 实施例包括沉积W以填充层间电介质中的接触/通孔开口,在N2中进行激光热退火以升高填充接触/通孔开口的W的温度并回流W,从而消除空隙。 实施例包括在激光热退火之前或之后进行CMP。

    Methods of forming capped copper interconnects with improved electromigration resistance
    98.
    发明授权
    Methods of forming capped copper interconnects with improved electromigration resistance 有权
    形成具有改善的电迁移阻力的封盖铜互连的方法

    公开(公告)号:US06599827B1

    公开(公告)日:2003-07-29

    申请号:US09846273

    申请日:2001-05-02

    IPC分类号: H01L214763

    CPC分类号: H01L21/76834 H01L21/76883

    摘要: The electromigration resistance of capped Cu or Cu alloy interconnects is significantly improved by pumping out the deposition chamber after treating the exposed planarized surface of the Cu or Cu alloy with an ammonia-containing plasma, introducing NH3 and N2 into the deposition chamber, and then ramping up the introduction of SiH4 prior to initiating deposition of a silicon nitride capping layer. Embodiments include ramping up the introduction of SiH4 in two stages prior to initiating plasma enhanced chemical vapor deposition of the silicon nitride capping layer.

    摘要翻译: 通过在用含氨的等离子体处理暴露的Cu或Cu合金的平坦化表面之后,通过泵出沉积室来显着改善封盖的Cu或Cu合金互连的电迁移电阻,将NH 3和N 2引入沉积室,然后斜坡 在开始沉积氮化硅覆盖层之前引入SiH4。 实施例包括在引发氮化硅覆盖层的等离子体增强化学气相沉积之前分两阶段引入SiH4。

    Method for simultaneous deposition and sputtering of TEOS and device thereby formed
    99.
    发明授权
    Method for simultaneous deposition and sputtering of TEOS and device thereby formed 有权
    由此形成的TEOS和装置的同时沉积和溅射的方法

    公开(公告)号:US06566252B1

    公开(公告)日:2003-05-20

    申请号:US09689144

    申请日:2000-10-11

    IPC分类号: H01L2144

    摘要: A method for making 0.25 micron semiconductor chips includes using TEOS as the high density plasma (HDP) inter-layer dielectric (ILD). More specifically, after establishing a predetermined aluminum line pattern on a substrate, TEOS is deposited and simultaneously with the TEOS deposition, excess TEOS is etched away, thereby avoiding hydrogen embrittlement of and subsequent void formation in the aluminum lines that could otherwise occur if silane were used as the HDP ILD.

    摘要翻译: 制造0.25微米半导体芯片的方法包括使用TEOS作为高密度等离子体(HDP)层间电介质(ILD)。 更具体地说,在基板上建立预定的铝线图案之后,TEOS沉积并与TEOS沉积同时被蚀刻掉,从而避免了铝线中的氢脆化和随后的空隙形成,否则如果硅烷是 用作HDP ILD。