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    • 8. 发明公开
    • PECVD 유전체막들의 압축 스트레스를 증가시키는 방법
    • 增加PECVD介质膜压缩应力的方法
    • KR1020080055610A
    • 2008-06-19
    • KR1020070103998
    • 2007-10-16
    • 어플라이드 머티어리얼스, 인코포레이티드
    • 발세아누,미헬라뉴옌,빅터티.지아,리-쿤주브코브,블라디미르위티,데렉알.엠'사드,히쳄
    • C23C16/30C23C16/00
    • H01L21/02167H01L21/0206H01L21/022H01L21/02211H01L21/02274H01L21/3148H01L21/3185H01L21/823807H01L29/7843
    • Methods for forming compressive stress nitride layers, a method for depositing a two layer film having compressive stress is provided, a method for depositing a layer comprising compressive stress is provided, and a method for pre-cleaning a substrate is provided, wherein the compressive stress nitride layers comprise silicon, carbon, and nitrogen and may be carbon-doped silicon nitride layers. A method for depositing a two layer film having compressive stress comprises the steps of: depositing an initiation layer comprising silicon and carbon and optionally nitrogen and/or oxygen on a substrate in a chamber from a first gas mixture in the presence of RF power, wherein the first gas mixture comprises a silicon and carbon-containing precursor and optionally a nitrogen source and/or an oxygen source; and depositing a bulk layer comprising silicon, carbon, and nitrogen on the initiation layer from a second gas mixture in the presence of RF power, wherein the second gas mixture comprises the silicon and carbon-containing precursor, a nitrogen source, and hydrogen gas, and the bulk layer has a compressive stress of -0.1 GPa to -10 GPa. A method for depositing a layer having a compressive stress comprises the steps of: depositing an initiation layer comprising silicon, carbon, and nitrogen on a substrate in a chamber from a first gas mixture in the presence of a plasma, wherein the first gas mixture comprises a silicon and carbon-containing precursor and a nitrogen source and does not comprise hydrogen gas; maintaining the plasma; and subsequently depositing a bulk layer comprising silicon, carbon, and nitrogen on the initiation layer from a second gas mixture in the presence of the plasma, wherein the second gas mixture comprises the silicon and carbon-containing precursor, the nitrogen source, and hydrogen gas, and the bulk layer has a compressive stress of -3 GPa to -10 GPa. A method for pre-cleaning a substrate comprises the steps of: treating a substrate having an upper surface comprising silicide with a gas mixture comprising nitrogen and hydrogen optionally in the presence of a plasma; and subsequently depositing a compressive stress nitride film or a tensile stress nitride film on the substrate.
    • 提供用于形成压应力氮化物层的方法,一种用于沉积具有压应力的双层膜的方法,提供了一种用于沉积包含压应力的层的方法,并且提供了一种用于预清洗基板的方法,其中压缩应力 氮化物层包括硅,碳和氮,并且可以是碳掺杂的氮化硅层。 一种用于沉积具有压缩应力的双层膜的方法包括以下步骤:在RF功率存在的情况下,将第一气体混合物中的包含硅和碳以及任选的氮和/或氧的起始层从腔室中的基底上沉积,其中 第一气体混合物包含含硅和碳的前体和任选的氮源和/或氧源; 以及在存在RF功率的情况下,从第二气体混合物在起始层上沉积包含硅,碳和氮的本体层,其中所述第二气体混合物包含含硅和碳的前体,氮源和氢气, 并且本体层具有-0.1GPa至-10GPa的压缩应力。 一种用于沉积具有压应力的层的方法包括以下步骤:在等离子体存在下,将第一气体混合物在室中的基底上沉积包含硅,碳和氮的起始层,其中第一气体混合物包含 含硅和碳的前体和氮源,并且不包含氢气; 维持等离子体; 以及随后在等离子体存在下从第二气体混合物沉积在起始层上的包含硅,碳和氮的本体层,其中所述第二气体混合物包含含硅和含碳的前体,氮源和氢气 ,并且本体层具有-3GPa至-10GPa的压缩应力。 预清洗衬底的方法包括以下步骤:任选地在等离子体存在下,用包括氮和氢的气体混合物处理包含硅化物的上表面的衬底; 随后在基底上沉积压应力氮化物膜或拉伸应力氮化物膜。