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    • 5. 发明申请
    • METHOD AND COMPOSITIONS FOR DIRECT COPPER PLATING AND FILLING TO FORM INTERCONNECTS IN THE FABRICATION OF SEMICONDUCTOR DEVICES
    • 用于直接镀铜和填充以形成半导体器件制造中的互连的方法和组合
    • WO2007096390A1
    • 2007-08-30
    • PCT/EP2007/051681
    • 2007-02-21
    • ALCHIMERGONZALEZ, JoséMONCHOIX, Hervé
    • GONZALEZ, JoséMONCHOIX, Hervé
    • C25D3/38C25D5/54C25D5/18
    • C25D3/38C25D5/18C25D5/54H01L21/2885H01L21/76877
    • The object of the present invention is a method and compositions for direct copper plating and filling to form interconnects in the fabrication of semiconductor devices. According to the invention, this method comprises : providing an electrolytic copper bath containing, in solution in a solvent, a source of copper ions with a concentration of between 45 and 200 mM, preferably of between 45 and 100 mM and at least one copper complexing agent which is an aliphatic polyamine having 2 to 4 amine functions with a concentration of between 30 and 200 mM, preferably of between 60 and 200 mM; the copper/complexing agent (s) molar ratio being of between 0.2 and 2, preferably between 0.3 and 1.5; bringing a copper diffusion barrier layer of a substrate into contact with said electrolytic copper bath, applying an electrical bias to the substrate for a duration adjusted according to the thickness of copper to be electroplated, removing the substrate from said electrolytic copper bath.
    • 本发明的目的是在半导体器件的制造中直接镀铜和填充以形成互连的方法和组合物。 根据本发明,该方法包括:提供一种在溶剂中含有浓度为45-200mM,优选45-100mM的铜离子源和至少一种铜络合物的铜离子源的电解铜浴 其是具有2至4个胺官能团的脂族多胺,其浓度为30至200mM,优选为60至200mM; 铜/络合剂的摩尔比为0.2至2,优选0.3至1.5; 使基板的铜扩散阻挡层与所述电解铜浴接触,将电偏压施加到所述基板上,持续时间根据要电镀的铜的厚度调整,从所述电解铜浴移除所述基板。