Abstract: A semiconductor device includes a semiconductor column including a first conductive region of first conductivity type, a second conductive region of second conductivity type, an intrinsic region disposed between the first conductive region and the second conductive region, and a barrier region of the first conductivity type disposed between the intrinsic region and the second conductive region. A gate electrode is disposed to cover the intrinsic region, and a gate insulating layer is disposed between the gate electrode and the intrinsic region. The semiconductor device may operate as a switch or a volatile memory according to a gate voltage applied to a gate and a drain voltage applied to a drain.

Abstract: A semiconductor device includes stacked transistors. Each of the transistors includes a semiconductor column including a first conductive region of first conductivity type, a second conductive region of second conductivity type, an intrinsic region disposed between the first conductive region and the second conductive region, and a barrier region of the first conductivity type disposed between the intrinsic region and the second conductive region. A gate electrode is disposed to cover the intrinsic region, and a gate insulating layer is disposed between the gate electrode and the intrinsic region.

Abstract: A semiconductor device includes stacked transistors. Each of the transistors includes a semiconductor column including a first conductive region of first conductivity type, a second conductive region of second conductivity type, an intrinsic region disposed between the first conductive region and the second conductive region, and a barrier region of the first conductivity type disposed between the intrinsic region and the second conductive region. A gate electrode is disposed to cover the intrinsic region, and a gate insulating layer is disposed between the gate electrode and the intrinsic region.

Abstract: A semiconductor device includes a semiconductor column including a first conductive region of first conductivity type, a second conductive region of second conductivity type, an intrinsic region disposed between the first conductive region and the second conductive region, and a barrier region of the first conductivity type disposed between the intrinsic region and the second conductive region. A gate electrode is disposed to cover the intrinsic region, and a gate insulating layer is disposed between the gate electrode and the intrinsic region. The semiconductor device may operate as a switch or a volatile memory according to a gate voltage applied to a gate and a drain voltage applied to a drain.

Abstract: A memory device includes: a semiconductor column extending vertically on a substrate and including a source region of a first conductivity type, an intrinsic region, and a drain region of a second conductivity type; a first gate electrode disposed adjacent to the drain region to cover the intrinsic region; a second gate electrode spaced apart from the first gate electrode and disposed adjacent to the source region to cover the intrinsic region; a first gate insulating layer disposed between the first gate electrode and the intrinsic region; and a second gate insulating layer disposed between the second gate electrode and the intrinsic region.

Abstract: A memory device, an operating method of the memory device, and a fabricating method of the memory device are provided. A memory device includes: a semiconductor column extending vertically on a substrate and including a source region of a first conductivity type, an intrinsic region, and a drain region of a second conductivity type; a first gate electrode disposed adjacent to the drain region to cover the intrinsic region; a second gate electrode spaced apart from the first gate electrode and disposed adjacent to the source region to cover the intrinsic region; a first gate electrode disposed between the first gate electrode and the intrinsic region; and a second gate insulating layer disposed between the second gate electrode and the intrinsic region.