Patent ID: 11888075
Assignee: nan
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A photodetector comprising:
a metal layer shielding incident light and generating surface plasmon polaritons (SPPs);
a light absorbing layer using the generated SPPs and allowing charges excited by the SPPs and a localized electric field effect to tunnel; and
a dielectric formed at nanoholes in which at least a part of the metal layer is opened,
wherein the SPPs form localized surface plasmons (LSPs) at an interface where the metal layer meets the dielectric,
wherein a density of a localized electric field increases per unit area to increase photocurrent as a size of the nanoholes decreases, and
wherein the photocurrent is induced by a localized electric field effect of the absorbed SPPs and tunneling of charges excited by photons of light.