Patent ID: 9068110
Filing Date: 2015-06-30
Classification: C09G,C09K,H01L

Abstract:
1. A polishing slurry for planarizing a thin film containing a chalcogenide material or a chalcogenide glass material, the polishing slurry comprising: polishing particles; and nanoscale particles of a polyhedral oligomeric silsesquioxane (POSS) having a smaller size than the polishing particles, each of the nanoscale particles including at least one silicon (Si) atom bonded to an oxygen (O) atom, wherein the POSS compound includes a compound having a formula (RSiO wherein R and R′ are organic substituents, X is a functional group, each of m, n, and l is an integer equal to or greater than 0 (zero), and wherein a value of m+n+1 is in a range from 6 to 12 so that the nanoscale particles are rigid and not polymerized during polishing of the thin film.