Patent ID: 11903198
Assignee: KIOXIA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A method of manufacturing a semiconductor device, the method comprising:
removing, from a stacked body comprising a plurality of sacrificial layers and a plurality of first insulation layers alternately stacked in a first direction, the sacrificial layers;
forming a reactive layer at a part of each of regions from which the sacrificial layers are removed, the reactive layer comprising a substance that is chemically reactive with a material gas comprising a first metal element;
forming a first metal layer comprising the first metal element and the substance by delivering the material gas to each of the regions from which the sacrificial layers are removed and causing a chemical reaction of the reactive layer with the material gas; and
forming a second metal layer on the first metal layer such that each of the regions from which the sacrificial layers are removed is filled, the second metal layer comprising the first metal element and having a lower content of the substance than the first metal layer, wherein
the method further comprises, prior to the forming of the reactive layer, delivering a nitrogen-containing gas to each of the regions from which the sacrificial lavers are removed.