Patent ID: 8847303
Filing Date: 2014-09-30
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate; a stacked body provided above the substrate, including a selector gate and an insulating layer provided on the selector gate; an insulating film provided on a sidewall of a hole formed by penetrating the stacked body in the stacking direction; a channel body provided on a sidewall of the insulating film in the hole, that blocks the hole near an end of an insulating layer side in the selector gate, and that encloses a cavity below a part that blocks the hole; and a semiconductor layer that is formed of a same material as the channel body and is embedded in the hole above the part where the channel body blocks the hole the semiconductor layer continuously and integrally provided on the part where the channel body blocks the hole, an impurity concentration of the semiconductor layer and an impurity concentration of the part where the channel body blocks the hole being higher than an impurity concentration of another part of the channel body other than the part where the channel body blocks the hole.