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    • 35. 发明授权
    • Compositions for chemical-mechanical planarization of noble-metal-featured substrates, associated methods, and substrates produced by such methods
    • 用于贵金属特征基板的化学机械平面化的组合物,相关方法和由这些方法制备的基材
    • US08142675B2
    • 2012-03-27
    • US12431172
    • 2009-04-28
    • Robert J. SmallZhefei J. Chen
    • Robert J. SmallZhefei J. Chen
    • B44C1/22
    • H01L21/3212C09G1/02C23F3/00H01L28/60
    • A composition for chemical-mechanical planarization comprises periodic acid and an abrasive present in a combined amount sufficient to planarize a substrate surface having a feature thereon comprising a noble metal, noble metal alloy, noble metal oxide, or any combination thereof. In one embodiment, the periodic acid is present in an amount in a range of from about 0.05 to about 0.3 moles/kilogram, and the abrasive is present in an amount in a range of from about 0.2 to about 6 weight percent. In another embodiment, the composition further comprises a pH-adjusting agent present in an amount sufficient to cause the pH of the composition to be in a range of from about pH 5 to about pH 10, or of from about pH 1 to about pH 4.A method for planarizing a substrate surface having a feature thereon comprising at least one noble metal, noble metal alloy, or noble metal oxide, or a combination thereof, comprises providing a composition or slurry comprising periodic acid and an abrasive in a combined amount sufficient to planarize the substrate surface, and polishing the surface with the slurry. A substrate produced by such a method is also provided.
    • 用于化学机械平面化的组合物包括高碘酸和研磨剂,其组合量足以使其上具有特征的基材表面平坦化,其中包含贵金属,贵金属合金,贵金属氧化物或其任何组合。 在一个实施方案中,高碘酸的存在量为约0.05至约0.3摩尔/千克,磨料的存在量为约0.2至约6重量%。 在另一个实施方案中,组合物还包含pH调节剂,其量足以使组合物的pH在约pH 5至约pH 10或约pH 1至约pH 4的范围内 包括至少一种贵金属,贵金属合金或贵金属氧化物或其组合的其上具有其特征的基材表面的平面化方法包括提供组合物或浆料,所述组合物或浆料包含合成量足够的高碘酸和磨料 平坦化基板表面,并用浆料抛光表面。 还提供了通过这种方法制造的基板。
    • 38. 发明授权
    • Free radical-forming activator attached to solid and used to enhance CMP formulations
    • 自由基形成活化剂连接到固体上并用于增强CMP配方
    • US07513920B2
    • 2009-04-07
    • US11264027
    • 2005-11-02
    • Junaid Ahmed SiddiquiRobert J. SmallDaniel Hernandez Castillo
    • Junaid Ahmed SiddiquiRobert J. SmallDaniel Hernandez Castillo
    • C09G1/02C09G1/04
    • C09G1/02C03C19/00C09K3/1463C23F3/04G11B5/3163G11B5/3169H01L21/3212
    • A CMP composition having: a fluid comprising water and at least one oxidizing compound that produces free radicals when contacted with an activator; and a plurality of particles having a surface and comprising at least one activator selected from ions or compounds of Cu, Fe, Mn, Ti, or mixtures thereof disposed on said surface, wherein at least a portion of said surface comprises a stabilizer. Preferred activators are selected from inorganic oxygen-containing compounds of B, W, Al, and P, for example borate, tungstate, aluminate, and phosphate. The activators are preferably ions of Cu or Fe. Surprisingly, as little as 0.2 ppm and 12 ppm of activator is useful, if the activator-containing particles are suspended in the fluid as a slurry. Advantageously, certain organic acids, and especially dihydroxy enolic acids, are included in an amount less than about 4000 ppm. Advantageously, activator is coated onto abrasive particles after the particles have been coated with stabilizer.
    • 一种CMP组合物,其具有:包含水和至少一种在与活化剂接触时产生自由基的氧化化合物的流体; 以及多个具有表面并且包含至少一种选自Cu,Fe,Mn,Ti或其混合物的离子或化合物的活化剂的颗粒,其中所述表面的至少一部分包含稳定剂。 优选的活化剂选自B,W,Al和P的无机含氧化合物,例如硼酸盐,钨酸盐,铝酸盐和磷酸盐。 活化剂优选为Cu或Fe的离子。 令人惊奇的是,只要0.2ppm和12ppm的活化剂是有用的,如果含活化剂的颗粒作为浆料悬浮在流体中。 有利地,某些有机酸,特别是二羟基烯醇酸的含量小于约4000ppm。 有利地,在颗粒已经用稳定剂涂覆之后,将活化剂涂覆到磨料颗粒上。