Abstract:
The present invention provides a polishing composition for polishing copper or copper alloy, comprising: an oxidizing agent (A); at least one acids (B) selected from amino acids, carboxylic acids of 8 or less carbon atoms, or inorganic acids; a sulfonic acid (C) having an alkyl group of 8 or more carbon atoms; a fatty acid (D) having an alkyl group of 8 or more carbon atoms; and an N-substituted imidazole (E) represented by the following general formula (1). (In the formula (1), Ra, Rb, and Rc represent H or an alkyl group of 1 to 4 carbon atoms, and Rd represents a group selected from the group consisting of a benzyl group, a vinyl group, an alkyl group of 1 to 4 carbon atoms, and a group in which a portion of H of these groups has been substituted with OH or NH 2 .)
Abstract:
A dispersion comprising particles of cerium oxide and sheet silicate and one or more aminocarboxylic acids and/or salts thereof, where the zeta potential of sheet silicate particles is negative and that of the cerium oxide particles is positive or equal to zero, and the zeta potential of the dispersion is negative overall, the mean diameter of the • cerium oxide particles is not more than 200 nm • sheet silicate particles is less than 100 nm, the content, based in each case on the total amount of the dispersion, of • cerium oxide particles is from 0.1 to 5% by weight • sheet silicate particles is from 0.01 to 10% by weight and • aminocarboxylic acid or salt thereof is from 0.01 to 5% by weight and the pH of the dispersion is from 7.5 to 10.5.
Abstract:
The present invention relates to the use of at least one oxidant, selected from peracids, in compositions for the processing of semiconductor wafers, in particular for t he cleaning and chemical mechanical polishing of semiconductor wafers. The present invention also relates to the use of a composition and composition therefore. The use of the oxidants of the invention leads to a good efficacy while limiting/avoiding the c orrosion of the substrate.
Abstract:
Compositions and methods suitable for the electrochemical mechanical planarization of a conductive material layer on a semiconductor workpiece. Compositions contain a phosphonic acid based electrolyte, a corrosion inhibitor, a chelating agent, a pH adjusting agent, and a solvent as the remainder.
Abstract:
Monolithic lattice-mismatched semiconductor heterostructures and methods for forming the same, such as by bonding patterned substrates with alternative active-area materials formed thereon to a rigid dielectric platform and then removing the highly- defective interface areas along with the underlying substrates to produce alternative active- area regions disposed over the insulator and substantially exhausted of misfit and threading dislocations.
Abstract:
The invention provides compositions and methods for planarizing or polishing a metal surface. The composition comprises an abrasive, cesium ions, and a liquid carrier comprising water.
Abstract:
A Chemical Mechanical Polishing (CMP) process receives a pretreated wafer (20), the pre-treated wafer (20) having an abrasive-containing sacrificial layer (26) disposed thereon. During polishing using the CMP process, the abrasivecontaining sacrificial layer (26) is broken-down to release abrasive that is used to abrade a surface (22) of the wafer (20).
Abstract:
During the processing of substrates (105), the substrate surface may be subjected to a cleaning process using supercritical CO 2 . Surface matter may remain, for example, because it is only minimally soluble in the supercritical CO 2 . For example, an oxidation cleaning process causes the substrate structure (105) to cleave at several points leaving smaller fragments of oxidized residue behind. This residue has only minimal solubility in supercritical CO 2 due to the polar constituents resulting from oxidation. The method thus further includes processing the substrate (105) with supercritical CO 2 and a functionalizing agent that can react with the smaller fragments and/or other less soluble components. These functionalized components are rendered more soluble in supercritical CO 2 and are more easily removed than their predecessors.
Abstract:
A wafer polishing solution and method for polishing a wafer comprising an amino acid and calcium ions or barium ions. The wafer polishing solution can be adjusted to control cut rate and selectivity for modifying semiconductor wafers using a fixed abrasive CMP process.
Abstract:
Systems and methods for the determination of the end point in a chemical mechanical polishing process are described. The method involves the use of a luminescent indicator that is selectively affected by a material released from a substrate being polished. The luminescence of the indicator is monitored across the substrate surface to assess the content of the surface in determining the desired polishing end point.