Abstract:
Removal compositions and processes for removing at least one metal impurity from a substrate (e.g., a silicon-containing substrate) having same thereon. Advantageously, the compositions remove metal impurities, e.g., iron, from silicon-containing substrates used as semiconductor devices and solar cell devices.
Abstract:
A cleaning composition and process for cleaning post-chemical mechanical polishing (CMP) residue and contaminants from a microelectronic device having said residue and contaminants thereon. The cleaning compositions include at least one quaternary base, at least one amine, at least one corrosion inhibitor, and at least one solvent. The composition achieves highly efficacious cleaning of the post-CMP residue and contaminant material from the surface of the microelectronic device while being compatible with barrier layers.
Abstract:
Removal compositions and processes for removing at least one material layer from a rejected microelectronic device structure having same thereon. The removal composition preferably includes hydrofluoric acid. The composition achieves substantial removal of the material(s) to be removed while not damaging the layers to be retained, for reclaiming, reworking, recycling and/or reuse of said structure. Processes include the monitoring and modifying said compositions.
Abstract:
A cleaning composition and process for cleaning post-chemical mechanical polishing (CMP) residue and contaminants from a microelectronic device having said residue and contaminants thereon. The cleaning compositions include novel corrosion inhibitors. The composition achieves highly efficacious cleaning of the post-CMP residue and contaminant material from the surface of the microelectronic device without compromising the low-k dielectric material or the copper interconnect material.
Abstract:
A removal composition and process for removing polymeric protective coating(s) from a microelectronic device having said coatings thereon. The removal composition removes the polymeric protective coating(s) from the device in a single step without substantially removing underlying layers.
Abstract:
A system and method for determining concentration of one or more components of interest in a copper electroplating solution, involving repetitive electroplating and stripping of copper, in which a ruthenium electrode is employed as a substrate for such electroplating and stripping steps. The concentration determination may be carried out by pulsed cyclic galvanostatic analysis (PCGA) or other methodology, to determine levels or accelerator and/or suppresser components of the plating bath chemistry.
Abstract:
A CMP composition containing 5-aminotetrazole, e.g., in combination with oxidizing agent, chelating agent, abrasive and solvent. Such CMP composition advantageously is devoid of BTA, and is useful for polishing surfaces of copper elements on semiconductor substrates, without the occurrence of dishing or other adverse planarization deficiencies in the polished copper, even in the presence of substantial levels of copper ions, e.g., Cu2+, in the bulk CMP composition at the copper/CMP composition interface during CMP processing.
Abstract:
A method of passivating a CMP composition by dilution and determining the relationship between the extent of dilution and the static etch rate of copper. Such relationship may be used to control the CMP composition during the CMP polish to minimize the occurrence of dishing or other adverse planarization deficiencies in the polished copper, even in the presence of substantial levels of copper ions in the CMP composition and at the copper/CMP composition interface.