Patent ID: 8623734
Filing Date: 2014-01-07
Classification: G11C,H01L

Abstract:
1. A method for filling a via hole with phase change material, the method comprising: forming a bottom electrode in a substrate; depositing at least one dielectric layer above the bottom electrode; forming the via hole within the dielectric layer above the bottom electrode, the via hole extending down to a top surface of the bottom electrode; heating the substrate to a reaction temperature; depositing at least one first precursor to a phase change material within the via hole, the first precursor configured to decompose on the top surface of the bottom electrode and chemisorb on a top surface of the dielectric layer at the reaction temperature; depositing at least one second precursor to the phase change material within the via hole after the first precursor at least partially decomposes on the top surface of the bottom electrode, the first precursor is deposited before the second precursor; and wherein the first precursor is configured to prevent the second precursor from decomposing on the surface of the dielectric layer at the reaction temperature.