Gate-controlled diode and chip

A chip, comprising a circuit and a gate-controlled diode, wherein the gate-controlled diode comprises:

• a substrate;
• a gate insulation layer;
• a gate, stacked on the substrate, wherein the gate is embedded in a surface of the substrate, and the gate insulation layer covers the surface of the substrate in which the gate is disposed;
• a first two-dimensional semiconductor layer, comprising a bipolar conductive material, wherein the first two-dimensional semiconductor layer is stacked on the gate insulation layer;
• a second two-dimensional semiconductor layer, wherein a portion of the second two-dimensional semiconductor layer is stacked on the gate insulation layer, another portion of the second two-dimensional semiconductor layer is stacked on the first two-dimensional semiconductor layer, the another portion of the second two-dimensional semiconductor layer stacked on the first two-dimensional semiconductor layer forms a heterojunction, and an orthographic projection of the heterojunction onto the substrate is in an orthographic projection of the gate onto the substrate;
• a source, wherein the source is stacked on the second two-dimensional semiconductor layer, the source is electrically connected to the second two-dimensional semiconductor layer, and the source is insulated from the first two-dimensional semiconductor layer;
• and
• a drain, disposed separately from the source, wherein the drain is stacked on the first two-dimensional semiconductor layer, the drain is electrically connected to the first two-dimensional semiconductor layer, and the drain is insulated from the second two-dimensional semiconductor layer;
• and
• an isolation layer between the drain and an end of the second two-dimensional semiconductor layer, and between the first two-dimensional semiconductor layer and the second two-dimensional semiconductor layer,
• wherein
• the gate comprises:
• a bottom surface;
• a first end surface, closer to the drain than the source;
• and
• a second end surface, closer to the source than the drain, wherein the first end surface and the second end surface are connected to two opposite ends of the bottom surface,
• the drain comprises:
• a first side surface on a side of the drain facing the source,
• the source comprises:
• a second side surface spaced from and facing the first side surface, and
• the first side surface is coplanar with the first end surface, and the second side surface is coplanar with the second end surface.