Patent ID: 9646841
Date: 2017-05-09
CPC Classifications: C09G,H01L

Claim:
1. A method for chemical mechanical planarization, the method comprising: forming a dielectric layer containing at least one opening, the dielectric layer is located on a substrate; epitaxially growing a Group III arsenide material within the at least one opening, the Group III arsenide material extended above a topmost surface of the dielectric layer; and planarizing the Group III arsenide material using at least one slurry composition to form coplanar surfaces of the Group III arsenide material and the dielectric layer, wherein a slurry composition of the at least one slurry composition polishes the Group III arsenide material selective to the topmost surface of the dielectric layer, and comprises an abrasive, at least one pH modulator and an oxidizer, the at least one pH modulator comprising an acidic pH modulator, but lacks a basic pH modulator, and wherein the oxidizer suppresses generation of an arsine gas.