Patent ID: 11961869
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A sensor, comprising:
a single photon avalanche photodiode (SPAD), including:
a first side, wherein the first side is a light incident side;
a second side, wherein the second side is opposite the first side; and
a light absorption layer;

a barrier member, wherein the barrier member is a semiconductor layer of a first conduction type, and wherein at least a portion of the light absorption layer is between the barrier member and the light incident side of the SPAD; and
a junction part, wherein the junction part includes a first semiconductor layer of the first conduction type, and a second semiconductor layer of a second conduction type that is opposite to the first conduction type, wherein the first semiconductor layer is between the second semiconductor layer and the barrier member, and wherein the barrier member guides electrons to a charge discharge path on outer sides of the barrier member so that the electrons propagate directly to the second semiconductor layer without passing through a boundary between the first semiconductor layer and the second semiconductor layer.