Patent ID: 6596151
Filing Date: 2003-07-22
Classification: C25D

Abstract:
A method for electroplating a metal comprising copper onto a substrate, comprising:disposing the substrate and an anode in a plating solution, the plating solution comprising: copper ions at a molar concentration of from about 0.1 to about 1.2; from about 0.1 to about 50 ppm of 2-amino-5-methyl-1,3,4-thiadiazole, 2-amino-5-ethyl-1,3,4-thiadiazole, 2-amino-5-isopropyl-1,3,4-thiadazole, or 2-amino-5-proply-1,3,4-thiadiazole; and a polyalkylene glycol at a concentration of from about 0.1 ppm to about 2500 ppm of the plating solution; and electrodepositing copper ions in the plating solution onto the substrate.