Patent ID: 8343880
Filing Date: 2013-01-01
Classification: C01B,H01L

Abstract:
1. A process for depositing a zeolite beta dielectric layer onto a substrate, comprising dealuminating a starting zeolite beta at dealumination conditions to provide a dealuminated zeolite beta having an aluminum concentration in a framework from about 0.1 to about 2.0 wt. %, and comprising crystals having an average diameter from about 5 to about 40 nanometers; slurrying the dealuminated zeolite beta in a solvent selected from the group consisting of polar organics, water, polyols and mixtures thereof to form a slurry; coating the substrate with the slurry and heating the coated substrate to evaporate the solvent and form a zeolite beta film on the substrate; treating the zeolite beta film with a silylating agent at silylation conditions to reduce the terminal hydroxyl groups on the zeolite; and where the substrate comprises a silicon wafer which is part of an integrated circuit.