Abstract:
A composition and associated method for chemical mechanical planarization (or other polishing) are described. The composition comprises an abrasive and a tricine-type or bicine-type compound. The composition possesses high selectivities for removal of copper in relation to tantalum and dielectric materials whilst minimizing local dishing and erosion effects in CMP. The composition may further comprise an oxidizing agent in which case the composition is particularly useful in conjunction with the associated method for metal CMP applications (e.g., copper CMP).
Abstract:
A composition and associated method for chemical mechanical planarization (or other polishing) are described. The composition contains a ketooxime compound and water. The composition may also contain an abrasive and/or a per compound oxidizing agent. The composition affords tunability of removal rates for metal, barrier material, and dielectric layer materials in metal CMP. The composition is particularly useful in conjunction with the associated method for metal CMP applications (e.g., step 2 copper CMP processes).