Increasing an electrical resistance of a resistor by oxidation or nitridization

    公开(公告)号:US06730984B1

    公开(公告)日:2004-05-04

    申请号:US09712391

    申请日:2000-11-14

    IPC分类号: H01L2900

    摘要: A method and structure for increasing an electrical resistance of a resistor that is within a semiconductor structure, by oxidizing or nitridizing a fraction of a surface layer of the resistor with oxygen/nitrogen (i.e., oxygen or nitrogen) particles, respectively. The semiconductor structure may include a semiconductor wafer, a semiconductor chip, and an integrated circuit. The method and structure comprises five embodiments. The first embodiment comprises heating an interior of a heating chamber that includes the oxygen/nitrogen particles as gaseous oxygen/nitrogen-comprising molecules (e.g., molecular oxygen/nitrogen). The second embodiment comprises heating the fraction of the surface layer by a beam of radiation (e.g., laser radiation), or a beam of particles, such that the semiconductor structure is within a chamber that includes the oxygen/particles as gaseous oxygen/nitrogen-comprising molecules (e.g., molecular oxygen/nitrogen). The third embodiment comprises: using a plasma chamber to generate plasma oxygen/nitrogen ions; and applying a DC voltage to the plasma oxygen/nitrogen ions to accelerate the plasma oxygen/nitrogen ions into the resistor such that the oxygen/nitrogen particles include the plasma oxygen/nitrogen ions. The fourth embodiment comprises using an anodization circuit to electrolytically generate oxygen/nitrogen ions in an electrolytic solution in which the resistor is immersed, wherein the oxygen/nitrogen particles include the electrolytically-generated oxygen/nitrogen ions. The fifth embodiment comprises immersing the semiconductor structure in a chemical solution which includes the oxygen/nitrogen particles, wherein the oxygen/nitrogen particles may include oxygen/nitrogen-comprising liquid molecules, oxygen/nitrogen ions, or an oxygen/nitrogen-comprising gas dissolved in the chemical solution under pressurization.

    INCREASING AN ELECTRICAL RESISTANCE OF A RESISTOR BY NITRIDIZATION
    46.
    发明申请
    INCREASING AN ELECTRICAL RESISTANCE OF A RESISTOR BY NITRIDIZATION 审中-公开
    通过硝化提高电阻的耐电性

    公开(公告)号:US20090011526A1

    公开(公告)日:2009-01-08

    申请号:US12202511

    申请日:2008-09-02

    IPC分类号: H01L21/66 H01L21/02 B01J19/12

    摘要: A method for increasing an electrical resistance of a resistor. A semiconductor structure that includes the resistor is placed in a chamber that includes a gas including nitrogen-containing molecules at an nitrogen concentration. A fraction F of an exterior surface of a surface layer of the resistor is exposed to the nitrogen-comprising molecules. A portion of the surface layer is heated at a heating temperature. A combination of the nitrogen concentration and the heating temperature is sufficient to nitridize the portion of the surface layer by reacting the portion with the nitrogen-containing molecules. Heating the portion of the surface layer includes directing a beam of radiation or particles into the portion of the surface layer heat the portion of the surface layer. The portion of the surface layer is nitridized by being reacted with the nitrogen-containing molecules such that an electrical resistance of the resistor is increased.

    摘要翻译: 一种用于增加电阻器的电阻的方法。 包括电阻器的半导体结构被放置在包括含氮浓度的含氮分子的气体的室中。 电阻器的表面层的外表面的分数F暴露于含氮分子。 表面层的一部分在加热温度下被加热。 氮浓度和加热温度的组合足以通过使该部分与含氮分子反应来氮化表面层的部分。 加热表面层的部分包括将辐射束或颗粒引导到表面层的部分中加热表面层的该部分。 通过与含氮分子反应使表面层的部分氮化,使得电阻器的电阻增加。