摘要:
Aqueous dispersion comprising cerium oxide and silicon dioxide, obtainable by first mixing a cerium oxide starting dispersion and a silicon dioxide starting dispersion while stirring, and then dispersing at a shear rate of 10000 to 30000 s -1 , wherein a) the cerium oxide starting dispersion - contains 0.5 to 30% by weight of cerium oxide particles as the solid phase, - has a d5o of the particle size distribution of 10 to 100 nm - and has a pH of 1 to 7, and b) the silicon dioxide starting dispersion - contains 0.1 to 30% by weight of colloidal silicon dioxide particles as the solid phase, has a d5o of the particle size distribution of 3 to 50 nm and has a pH of 6 to 11.5, d) with the proviso that the d5o of the particle size distribution of the cerium oxide particles is greater than that of the silicon dioxide particles, the cerium oxide/silicon dioxide weight ratio is >1 and the amount of cerium oxide starting dispersion is such that the zeta potential of the dispersion is negative.
摘要:
A process for the manufacture of semiconductor devices comprising the chemical mechanical polishing of elemental germanium and/or Si 1-x Ge x material with 0.1 ≤ x
摘要:
A chemical mechanical polishing (CMP) composition Abstract Use of a chemical mechanical polishing (CMP) composition comprising (A)inorganic particles, organic particles, or a mixture thereof, (B)a heteropolyacid or a salt thereof, (C)a salt comprising chloride, fluoride, bromide, or a mixture thereof as anion, and (D)an aqueous medium, for polishing a substrate comprising a self-passivating metal, germanium, nickel phosphorous (NiP), or a mixture thereof.
摘要:
A process for the manufacture of semiconductor devices comprising the chemical mechanical polishing of elemental germanium and/or Si 1-x Ge x material with 0.1 ≤ x 11 R 12 R 13 R 14 ] + , wherein {k} is 1, 2 or 3, (Z) is a hydroxyl (-OH), alkoxy (-OR 1 ), heterocyclic alkoxy (-OR 1 as part of a heterocyclic structure), carboxylic acid (-COOH), carboxylate (-COOR 2 ), amino (-NR 3 R 4 ), heterocyclic amino (-NR 3 R 4 as part of a heterocyclic structure), imino (=N-R 5 or -N=R 6 ), heterocyclic imino (=N-R 5 or -N=R 6 as part of a heterocyclic structure), phosphonate (-P(=0)(OR 7 )(OR 8 ) ), phosphate (-0-P(=0)(OR 9 )(OR 10 ) ), phosphonic acid (-P(=0)(OH) 2 ), phosphoric acid (-0-P(=0)(OH) 2 ) moiety, or their protonated or deprotonated forms, R 1 , R 2 , R 7 , R 9 is - independently from each other - alkyl, aryl, alkylaryl, or arylalkyl, R 3 , R 4 , R 5 , R 8 , R 10 is - independently from each other - H, alkyl, aryl, alkylaryl, or arylalkyl, R 6 is alkylene, or arylalkylene, R 11 , R 12 , R 13 is - independently from each other - H, alkyl, aryl, alkylaryl, or arylalkyl, and R 11 , R 12 , R 13 does not comprise any moiety (Z), R 14 is alkyl, aryl, alkylaryl, or arylalkyl, and R 14 does not comprise any moiety (Z), and (D) an aqueous medium.