Patent ID: 9214359
Filing Date: 2015-12-15
Classification: B23H,C25F,H01L

Abstract:
1. A method for processing a microelectronic substrate, the method comprising: selecting a pH based at least partially on an absolute value of a difference between a first open circuit potential of a second conductive material at the pH and a second open circuit potential of a second conductive material at the pH, wherein the second conductive material is different than the first conductive material; contacting a surface of a microelectronic substrate with an electrolytic liquid having the selected pH, wherein the microelectronic substrate includes the first and second conductive materials; and simultaneously removing at least portions of the first and second conductive materials from the microelectronic substrate while passing electrical current through the electrolytic liquid and the first and second conductive materials and while the electrolytic liquid is in contact with the microelectronic substrate.