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    • 10. 发明授权
    • Concentrated electroless solution for selective deposition of cobalt-based capping/barrier layers
    • 用于选择性沉积钴基封端/阻挡层的集中化学镀溶液
    • US07658790B1
    • 2010-02-09
    • US11773316
    • 2007-07-03
    • Alexander GorerTony ChiangChi-I Lang
    • Alexander GorerTony ChiangChi-I Lang
    • C23C18/34
    • C23C18/34C23C18/50
    • An electroless solution for deposition of a cobalt-based alloy on a substrate is provided. The electroless solution may be formed by mixing first and second solutions, with the first and second solutions being prepared from concentrated precursors. In one embodiment, the first solution contains a cobalt (Co) ion source and a complexing and deposition selectivity agent. In one embodiment, the cobalt concentration in the first solution is at least 90 millimoles per liter. The second solution contains a reducing agent. In one embodiment, the reducing agent is dimethylamineborane (DMAB) having a concentration of at least 10 grams per liter. In other embodiments, the first solution also contains a tungsten (W) ion source, and either the first or second solution also contains a phosphorous (P) ion source.
    • 提供了一种用于在基底上沉积钴基合金的无电溶液。 化学溶液可以通过混合第一和第二溶液形成,第一和第二溶液由浓缩的前体制备。 在一个实施方案中,第一溶液含有钴(Co)离子源和络合和沉积选择剂。 在一个实施方案中,第一溶液中的钴浓度为至少90毫摩尔/升。 第二种溶液含有还原剂。 在一个实施方案中,还原剂是浓度为至少10克/升的二甲胺硼烷(DMAB)。 在其它实施方案中,第一溶液还含有钨(W)离子源,并且第一或第二溶液也含有磷(P)离子源。