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    • 66. 发明申请
    • ACTIVATION-FREE ELECTROLESS SOLUTION FOR DEPOSITION OF COBALT AND METHOD FOR DEPOSITION OF COBALT CAPPING/ PASSIVATION LAYER ON COPPER
    • 用于沉积钴的无活性电解质溶液和铜沉积铜/铜钝化层沉积方法
    • WO2004081256A1
    • 2004-09-23
    • PCT/US2004/006607
    • 2004-03-05
    • BLUE29 CORPORATIONIVANOV, Igor, C.KOLICS, ArturPETROV, NicolaiTING, Chiu
    • KOLICS, ArturPETROV, NicolaiTING, Chiu
    • C23C18/50
    • H01L21/288C23C18/36C23C18/50H01L21/76849
    • The present invention relates to compositions and a method for electroless formation of alkaline-metal-free coatings on the basis of cobalt and composition of cobalt with tungsten and phosphorus, which have high resistance to oxidation and stability of electrical characteristics, when the Co-Cu system layer is used in IC chips. The composition of the electroless solution contains more than one reducing agents, one of which can catalyze the initial electroless deposition layer of cobalt on copper (called initiator), while the other maintains deposition of cobalt on the aforementioned initial layer as the process is continued. Small amount (100- 5000 ppm) of elements from the initiator also builds into the electroless film, which is expected to further improve the barrier properties of the resultant film compared to the deposition bath without initiator. Such coating may find application in semiconductor manufacturing where properties of deposited films and controllability of the composition and physical and chemical characteristics of the deposited films may be critically important.
    • 本发明涉及组合物和无碱形成无碱金属的涂层的方法,其中钴和钴与钨和磷的组成具有高抗氧化性和电特性的稳定性,当Co-Cu 系统层用于IC芯片。 无电溶液的组成包含多于一种还原剂,其中之一可以催化铜上的钴的初始无电沉积层(称为引发剂),而另一种还原剂继续在上述初始层上沉积钴。 来自引发剂的少量(100-5000ppm)元素也构成无电镀膜,与无引发剂的沉积浴相比,预期可进一步提高所得膜的阻隔性能。 这种涂层可以应用于半导体制造中,其中沉积膜的性质和组成的可控性以及沉积膜的物理和化学特性可能是至关重要的。