公开(公告)号：US20210102093A1

公开(公告)日：2021-04-08

申请号：US17123685

申请日：2020-12-16

Applicant: BASF SE

Inventor： Robert REICHARDT ,  Max SIEBERT ,  Yongqing LAN ,  Michael LAUTER ,  Sheik USMAN IBRAHIM ,  Reza M. GOLZARIAN ,  Te Yu WEI ,  Haci Osman GUEVENC ,  Julian PROELSS ,  Leonardus LEUNISSEN

IPC: C09G1/02 ,  C09G1/04 ,  C09K3/14 ,  H01L21/306 ,  H01L21/321 ,  H01L21/461

Abstract: A chemical mechanical polishing composition may be used for chemical mechanical polishing of a substrate including (i) cobalt and/or (ii) a cobalt alloy and (iii) TiN and/or TaN, wherein the CMP composition includes (A) inorganic particles (B) at least one organic compound including an amino-group and an acid group, the compound including n amino groups and at least n+1 acidic protons, a being a integer ≥1; (C) at least one oxidizer in an amount of from 0.2 to 2.5 wt.-% based on the total weight of the MP composition; and (D) an aqueous medium. The CMP composition may have a pH of more than 6 and less than 9.