LIGHT SENSORS AND SOURCES COMPRISING AT LEAST ONE MICROCAVITY WITH A LOCALIZED TAMM PLASMON MODE

摘要

Light sensor or source comprising: a STACK (EB) of dielectric or semiconductor films, comprising, in alternation, in what is called a vertical direction, high-refractive-index (n₁) and low-refractive-index (n₂) films forming an interference mirror or Bragg reflector and having a top high-refractive-index film (CS); at least one first metal pad (PM) deposited on or attached to said top film of the film stack so as to form a structure supporting a first Tamm plasmon mode spatially localized in at least one lateral direction perpendicular to said vertical direction; and at least one light detector or emitter (BQ, QW) arranged inside said film stack under said metal pad and at a depth corresponding to a local electric-field maximum of said Tamm plasmon mode, so as to detect or emit radiation having a wavelength λ resonant with said plasmon mode.