Patent ID: 9721963
Date: 2017-08-01
CPC Classifications: H01L

Claim:
1. A monolithic three-dimensional memory device comprising: a stack of alternating layers comprising insulating layers and electrically conductive layers and located over a substrate; a memory opening vertically extending through the stack of alternating layers; a memory film located at a periphery of the memory opening; a metal dichalcogenide channel extending through the memory opening and located inside the memory film; and a drain region contacting at least one of an upper end and a sidewall of the metal dichalcogenide channel, wherein the monolithic three-dimensional memory device comprises at least one feature selected from: a first feature that the drain region further comprises an annular doped metal dichalcogenide drain portion; a second feature that the drain region contacts the upper end of the metal dichalcogenide channel; and a third feature that the drain region contacts the sidewall of the metal dichalcogenide channel.