Abstract:
A method for fabricating a non-volatile memory device with a three-dimensional structure includes forming a pipe gate conductive layer on a substrate, forming a pipe channel hole in the pipe gate conductive layer, burying a first sacrificial layer in the pipe channel hole, stacking interlayer dielectric layers and gate conductive layers on the pipe gate conductive layer including the first sacrificial layer, forming a pair of cell channel holes in the interlayer dielectric layers and the gate conductive layers, forming a second sacrificial layer on a resultant structure including the pair of cell channel holes, and forming a third sacrificial layer with etching selectivity relative to the second sacrificial layer on the second sacrificial layer and filling the cell channel holes with the third sacrificial layer.
Abstract:
A variable resistance memory device includes a first electrode, a second electrode, a first variable resistance layer formed over the first electrode and including at least two kinds of metal oxides, and a second variable resistance layer interposed between the first variable resistance layer and the second electrode and including a metal oxide.