Patent ID: 8907397
Filing Date: 2014-12-09
Classification: H01L

Abstract:
1. A nonvolatile semiconductor memory device comprising: a substrate; a conductive film formed above the substrate and serving as a control gate having a hole extending from an upper surface of the conductive film to a lower surface of the conductive film; a block insulating film in the hole, formed on an inner side surface of the conductive film defining the hole; a charge storage layer in the hole, formed on an inner side surface of the block insulating film; a tunnel insulating film in the hole, formed on an inner side surface of the charge storage layer; a semiconductor layer in the hole, formed on an inner side surface of the tunnel insulating film; an oxide film in the hole, formed on an inner side surface of the semiconductor layer; and a film in the hole, formed on an inner side surface of the oxide film and containing a material having an oxygen dissociation catalytic action.