Patent ID: 11910624
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 9:
10. A solid-state imaging element comprising:
a photoelectric conversion layer;
a first electrode and a second electrode opposed to each other with the photoelectric conversion layer interposed therebetween;
a semiconductor layer provided between the first electrode and the photoelectric conversion layer;
an accumulation electrode opposed to the photoelectric conversion layer with the semiconductor layer interposed therebetween; and
an insulating film provided between the accumulation electrode and the semiconductor layer,
wherein either i) the semiconductor layer has a potential energy in a conduction band lower than a potential energy of a conduction band of the photoelectric conversion layer and has a Fermi level lower than a Fermi level of the photoelectric conversion layer, or ii) the semiconductor layer has a potential energy in a valence band higher than a potential energy in a valence band of the photoelectric conversion layer and has a Fermi level lower than a Fermi level of the photoelectric conversion layer, and
wherein a potential difference between a first region of the photoelectric conversion layer and the semiconductor layer is larger than a potential difference between a second region of the photoelectric conversion layer and the semiconductor layer, the first region of the photoelectric conversion layer being disposed between the second region of the photoelectric conversion layer and semiconductor layer.