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    • 1. 发明申请
    • ATOMIC LAYER DEPOSITION OF SILICON NITRIDE USING DUAL-SOURCE PRECURSOR AND INTERLEAVED PLASMA
    • 氮化硅原子层沉积用双源前体和交错等离子体
    • WO2012047812A2
    • 2012-04-12
    • PCT/US2011054635
    • 2011-10-03
    • APPLIED MATERIALS INCMALLICK ABHIJIT BASU
    • MALLICK ABHIJIT BASU
    • H01L21/314H01L21/205
    • H01L21/0217C23C16/345C23C16/45534C23C16/45542H01L21/02274H01L21/0228
    • Atomic layer deposition using precursor having both nitrogen and silicon components is described. Deposition precursor contains molecules which supply both nitrogen and silicon to growing film of silicon nitride. Silicon-nitrogen bonds may be present in precursor molecule, but hydrogen and/or halogens may also be present. Growth substrate may be terminated in a variety of ways and exposure to deposition precursor displaces species from outer layer of growth substrate, replacing them with an atomic-scale silicon-and-nitrogen-containing layer. The silicon-and-nitrogen-containing layer grows until one complete layer is produced and then stops (self-limiting growth kinetics). Subsequent exposure to a plasma excited gas modifies the chemical termination of the surface so growth step may be repeated. Presence of both silicon and nitrogen in deposition precursor molecule increases the deposition per cycle thereby reducing the number of precursor exposures to grow a film of same thickness.
    • 描述了使用具有氮和硅组分的前体的原子层沉积。 沉积前体含有向氮化硅生长膜提供氮和硅的分子。 硅 - 氮键可以存在于前体分子中,但是氢和/或卤素也可以存在。 生长底物可以以各种方式终止,并且暴露于沉积前体从生长底物的外层置换物质,用原子尺度含硅和氮的层代替它们。 含硅和氮的层生长直至产生一个完整的层,然后停止(自限生长动力学)。 随后暴露于等离子体激发的气体会改变表面的化学终止,因此可以重复生长步骤。 沉积前体分子中硅和氮两者的存在增加了每个循环的沉积,从而减少前体曝光的数量以生长相同厚度的膜。
    • 2. 发明申请
    • EMBEDDED CATALYST FOR ATOMIC LAYER DEPOSITION OF SILICON OXIDE
    • 嵌入式催化剂用于原子层沉积氧化硅
    • WO2012033717A2
    • 2012-03-15
    • PCT/US2011050391
    • 2011-09-02
    • APPLIED MATERIALS INCMALLICK ABHIJIT BASU
    • MALLICK ABHIJIT BASU
    • H01L21/316C23C16/42
    • H01L21/02164C23C16/401C23C16/45534C23C16/56H01L21/02216H01L21/0228H01L21/0234
    • Catalyzed atomic layer deposition from a reduced number of precursors is described. A deposition precursor contains silicon, oxygen and a catalytic ligand. A hydroxyl-terminated substrate is exposed to the deposition precursor to form a silicon bridge bond between two surface-bound oxygens. The surface-bound oxygens were part of two surface-bound hydroxyl groups and the adsorption of the deposition precursor liberates the hydrogens. The silicon atom is also chemically-bound to one or two additional oxygen atoms which were already chemically-bound to the silicon within a same deposition precursor molecule. At least one of the additional oxygen atoms is further chemically-bound to the catalytic ligand either directly or by way of a hydrocarbon chain. Further exposure of the substrate to moisture (H2O) results in displacement of the additional oxygen which are replaced by hydroxyl groups from the moisture. The surface is again hydroxyl-terminated and the process may be repeated. The catalytic nature of the reaction enables the deposition to occur at low substrate temperatures. The chemically-embedded nature of the catalyst increases the deposition per cycle thereby reducing the number of precursor exposures to grow a film of the same thickness.
    • 描述了由数量减少的前体催化的原子层沉积。 沉积前体含有硅,氧和催化配体。 将羟基封端的基底暴露于沉积前体以在两个表面结合的氧之间形成硅桥键。 表面结合的氧是两个表面结合的羟基的一部分,并且沉积前体的吸附释放氢。 硅原子还与一个或两个额外的氧原子化学键合,这些氧原子已经在同一沉积前体分子内与硅化学键合。 至少一个另外的氧原子进一步直接或通过烃链化学键合到催化配体上。 将衬底进一步暴露于水分(H 2 O)导致额外的氧被羟基置换而从湿气中置换。 表面再次被羟基封端并且该过程可以重复。 反应的催化性质使得沉积能够在低基体温度下发生。 催化剂的化学包埋特性增加了每个循环的沉积量,从而减少了前体曝光的数量以生长相同厚度的膜。