摘要:
A method for fabrication a metal interconnect that includes a ruthenium layer and minimizes void formation comprises forming a barrier layer on a substrate having a trench, depositing a ruthenium layer on the barrier layer, depositing an alloy-seed layer on the ruthenium layer, using an electroless plating process to deposit a copper seed layer on the alloy-seed layer, and using an electroplating process to deposit a bulk metal layer on the copper seed layer. The alloy-seed layer inhibits void formation issues at the ruthenium-copper interface and improves electromigration issues. The electroless copper seed layer inhibits the alloy-seed layer from dissolving into the electroplating bath and reduces electrical resistance across the substrate during the electroplating process.
摘要:
A method of processing a substrate is described. A coupling agent and a metal ion solution are applied to the substrate. An activating solution is applied to activate metal ions of the metal ion solution to create a metal film out of the ions. Atoms of the metal film are used to catalyze a metal of a base metal solution to form a metal layer. The metal layer can be used as a seed layer for electroplating purposes.
摘要:
An apparatus that includes an electroosmotic pump and an aqueous or nonaqueous electrolyte liquid and generates relatively low amount of hydrogen gas is described herein. The apparatus may further include a hydrogen absorber.
摘要:
The present invention relates to a cobalt electroless plating bath composition and method of using it for microelectronic device fabrication. In one embodiment, the present invention relates to cobalt electroless plating in the fabrication of interconnect structures in semiconductor devices.