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    • 14. 发明申请
    • REMOTELY-EXCITED FLUORINE AND WATER VAPOR ETCH
    • 远距离激发氟和水蒸气
    • WO2012115750A3
    • 2012-11-15
    • PCT/US2012023356
    • 2012-01-31
    • APPLIED MATERIALS INCZHANG JINGCHUNWANG ANCHUANINGLE NITIN K
    • ZHANG JINGCHUNWANG ANCHUANINGLE NITIN K
    • H01L21/3065
    • H01L21/31116H01J37/32357H01L28/91
    • A method of etching exposed silicon oxide on patterned heterogeneous structures is described and includes a remote plasma etch formed from a fluorine-containing precursor. Plasma effluents from the remote plasma are flowed into a substrate processing region where the plasma effluents combine with water vapor. The chemical reaction resulting from the combination produces reactants which etch the patterned heterogeneous structures to produce, in embodiments, a thin residual structure exhibiting little deformation. The methods may be used to conformally trim silicon oxide while removing little or no silicon, polysilicon, silicon nitride, titanium or titanium nitride. In an exemplary embodiment, the etch processes described herein have been found to remove mold oxide around a thin cylindrical conducting structure without causing the cylindrical structure to significantly deform.
    • 描述了在图案化的异质结构上蚀刻暴露的氧化硅的方法,并且包括由含氟前体形成的远程等离子体蚀刻。 来自远程等离子体的等离子体流出物流入基板处理区域,在该区域等离子体流出物与水蒸汽结合。 由组合产生的化学反应产生反应物,该反应物蚀刻图案化的异质结构以在实施例中产生显示出很小变形的薄的残余结构。 这些方法可以用于保形修整氧化硅,同时除去很少或不含硅,多晶硅,氮化硅,钛或氮化钛。 在示例性实施例中,已经发现本文描述的蚀刻工艺去除薄圆柱形导电结构周围的模铸氧化物,而不会使圆柱结构显着变形。
    • 15. 发明申请
    • SELECTIVE ETCH FOR SILICON FILMS
    • 硅片的选择性蚀刻
    • WO2011149638A3
    • 2012-03-15
    • PCT/US2011035598
    • 2011-05-06
    • APPLIED MATERIALS INCZHANG JINGCHUNWANG ANCHUANINGLE NITIN K
    • ZHANG JINGCHUNWANG ANCHUANINGLE NITIN K
    • H01L21/3065
    • H01L21/32137H01L21/3065H01L21/311H01L21/31116H01L21/32136
    • A method of etching patterned heterogeneous silicon-containing structures is described and includes a remote plasma etch with inverted selectivity compared to existing remote plasma etches. The methods may be used to conformally trim polysilicon while removing little or no silicon oxide. More generally, silicon-containing films containing less oxygen are removed more rapidly than silicon-containing films which contain more oxygen. Other exemplary applications include trimming silicon carbon nitride films while essentially retaining silicon oxycarbide. Applications such as these are enabled by the methods presented herein and enable new process flows. These process flows are expected to become desirable for a variety of finer linewidth structures. Methods contained herein may also be used to etch silicon-containing films faster than nitrogen-and-silicon containing films having a greater concentration of nitrogen.
    • 描述了蚀刻图案化异质含硅结构的方法,并且包括与现有远程等离子体蚀刻相比具有反向选择性的远程等离子体蚀刻。 这些方法可用于在少量或不含氧化硅的同时去除多晶硅。 更一般地,含有较少氧的含硅膜比含有更多氧的含硅膜更快地除去。 其它示例性应用包括修整硅碳氮化物膜,同时基本上保留碳氧化硅。 这些应用程序可以通过本文介绍的方法实现,从而实现新的流程。 预期这些工艺流程对于各种更细的线宽结构是理想的。 本文包含的方法也可以用于比含有较高氮浓度的含氮和硅的膜更快地蚀刻含硅膜。
    • 16. 发明申请
    • CONFORMAL LAYERS BY RADICAL-COMPONENT CVD
    • 通过放射性元素CVD的合适层
    • WO2011109148A3
    • 2012-02-23
    • PCT/US2011024378
    • 2011-02-10
    • APPLIED MATERIALS INCLIANG JINGMEICHEN XIAOLINLI DONGQINGINGLE NITIN K
    • LIANG JINGMEICHEN XIAOLINLI DONGQINGINGLE NITIN K
    • H01L21/318
    • H01L21/0217C23C16/345C23C16/452C23C16/56H01L21/02164H01L21/02271H01L21/02326H01L21/76837
    • Methods, materials, and systems are described for forming conformal dielectric layers containing silicon and nitrogen (e.g., silicon-nitrogen-hydrogen (Si-N-H) film) from a carbon-free silicon-and-nitrogen precursor and radical-nitrogen precursor. Carbon-free silicon-and-nitrogen precursor is predominantly excited by contact with radical-nitrogen precursor. Because silicon-and-nitrogen film is formed without carbon, conversion of film into hardened silicon oxide is done with less pore formation and less volume shrinkage. The deposited silicon-and-nitrogen-containing film may be wholly or partially converted to silicon oxide which allows optical properties of conformal dielectric layer to be selectable. The deposition of a thin silicon-and-nitrogen-containing film may be performed at low temperature to form a liner layer in a substrate trench. The low temperature liner layer is found to improve wetting properties and allows flowable films to more completely fill the trench.
    • 描述了用于形成含有硅和氮的保形电介质层(例如,硅 - 氮 - 氢(Si-N-H)膜)的方法,材料和系统,其来自无碳硅和氮前体和自由基 - 氮前体。 无碳硅氮前驱主要通过与自由基 - 氮前体接触激发。 由于无碳膜而形成硅 - 氮膜,因此,薄膜转化成硬化氧化硅可以减少孔形成和体积收缩。 沉积的含硅和氮的膜可以全部或部分地转化为允许保形介电层的光学特性可选择的氧化硅。 可以在低温下进行薄的含硅和氮的膜的沉积,以在衬底沟槽中形成衬垫层。 发现低温内衬层可改善润湿性能,并允许可流动膜更完全地填充沟槽。
    • 19. 发明申请
    • SELECTIVE ETCH OF SILICON BY WAY OF METASTABLE HYDROGEN TERMINATION
    • 用可变氢终止方式选择性蚀刻硅
    • WO2013052712A3
    • 2013-06-20
    • PCT/US2012058818
    • 2012-10-04
    • APPLIED MATERIALS INCWANG ANCHUANZHANG JINGCHUNINGLE NITIN KLEE YOUNG S
    • WANG ANCHUANZHANG JINGCHUNINGLE NITIN KLEE YOUNG S
    • H01L21/3065
    • H01L21/3065H01J37/32357H01L21/3081H01L21/32137
    • Methods of etching exposed silicon on patterned heterogeneous structures is described and includes a remote plasma etch formed from a fluorine-containing precursor and a hydrogen-containing precursor. Plasma effluents from the remote plasma are flowed into a substrate processing region where the plasma effluents react with the exposed regions of silicon. The plasmas effluents react with the patterned heterogeneous structures to selectively remove silicon while very slowly removing other exposed materials. The silicon selectivity results, in part, from a preponderance of hydrogen-containing precursor in the remote plasma which hydrogen terminates surfaces on the patterned heterogeneous structures. A much lower flow of the fluorine-containing precursor progressively substitutes fluorine for hydrogen on the hydrogen-terminated silicon thereby selectively removing silicon from exposed regions of silicon. The methods may be used to selectively remove silicon far faster than silicon oxide, silicon nitride and a variety of metal-containing materials.
    • 描述了在图案化的异质结构上蚀刻暴露的硅的方法,并且包括由含氟前体和含氢前体形成的远程等离子体蚀刻。 来自远程等离子体的等离子体流出物流入衬底处理区域,在衬底处理区域中,等离子体流出物与硅的暴露区域反应。 等离子体流出物与图案化的异质结构反应以选择性地去除硅,同时非常缓慢地去除其他暴露的材料。 硅选择性的结果部分来自远程等离子体中含氢前体的优势,其中氢终止于图案化的异质结构上的表面。 含氟前体的流量低得多,以逐渐将氟取代为氢封端的硅上的氢,从而从硅的暴露区域选择性地除去硅。 这些方法可用于选择性地去除硅,其速度比氧化硅,氮化硅和各种含金属材料快得多。
    • 20. 发明申请
    • SELECTIVE SUPPRESSION OF DRY-ETCH RATE OF MATERIALS CONTAINING BOTH SILICON AND NITROGEN
    • 选择性抑制含有硅和氮的材料的干燥速率
    • WO2013033527A3
    • 2013-04-25
    • PCT/US2012053329
    • 2012-08-31
    • APPLIED MATERIALS INCWANG YUNYUWANG ANCHUANZHANG JINGCHUNINGLE NITIN KLEE YOUNG S
    • WANG YUNYUWANG ANCHUANZHANG JINGCHUNINGLE NITIN KLEE YOUNG S
    • H01L21/3065
    • H01L21/3065H01J37/32357H01J37/32449H01L21/32137
    • A method of suppressing the etch rate for exposed silicon-and-nitrogen-containing material on patterned heterogeneous structures is described and includes a two stage remote plasma etch. The etch selectivity of silicon relative to silicon nitride and other silicon-and-nitrogen-containing material is increased using the method. The first stage of the remote plasma etch reacts plasma effluents with the patterned heterogeneous structures to form protective solid by-product on the silicon-and-nitrogen-containing material. The plasma effluents of the first stage are formed from a remote plasma of a combination of precursors, including nitrogen trifluoride and hydrogen (H2). The second stage of the remote plasma etch also reacts plasma effluents with the patterned heterogeneous structures to selectively remove material which lacks the protective solid by-product. The plasma effluents of the second stage are formed from a remote plasma of a fluorine-containing precursor.
    • 描述了抑制图案化异质结构上暴露的含硅和氮的材料的蚀刻速率的方法,并且包括两级远程等离子体蚀刻。 使用该方法,硅相对于氮化硅和其它含硅和氮的材料的蚀刻选择性增加。 远程等离子体蚀刻的第一阶段使等离子体流出物与图案化的异质结构反应,以在含硅和氮的材料上形成保护性固体副产物。 第一级的等离子体流出物由包括三氟化氮和氢气(H 2)在内的前体组合的远程等离子体形成。 远程等离子体蚀刻的第二阶段还使等离子体流出物与图案化的异质结构反应,以选择性地除去缺乏保护性固体副产物的材料。 第二级的等离子体流出物由含氟前体的远程等离子体形成。