skip to main content

SciTech ConnectSciTech Connect

Title: Antenna-coupled microcavities for enhanced infrared photo-detection

We demonstrate mid-infrared detectors embedded into an array of double-metal nano-antennas. The antennas act as microcavities that squeeze the electric field into thin semiconductor layers, thus enhancing the detector responsivity. Furthermore, thanks to the ability of the antennas to gather photons from an area larger than the device's physical dimensions, the dark current is reduced without hindering the photo-generation rate. In these devices, the background-limited performance is improved with a consequent increase of the operating temperature. Our results illustrate how the antenna-coupled microcavity concept can be applied to enhance the performances of infrared opto-electronic devices.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot, Sorbonne Paris Cité, CNRS-UMR 7162, 75013 Paris (France)
  2. IOM CNR, Laboratorio TASC, Area Science Park, I-34149 Trieste (Italy)
  3. Institut d'Electronique Fondamentale, Université Paris Sud, CNRS-UMR 8622, F-91405 Orsay (France)
Publication Date:
OSTI Identifier:
22280597
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 3; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTENNAS; ELECTRIC CURRENTS; ELECTRIC FIELDS; ELECTRONIC EQUIPMENT; INFRARED RADIATION; LAYERS; METALS; PERFORMANCE; PHOTODETECTORS; PHOTONS; SEMICONDUCTOR MATERIALS; TEMPERATURE DEPENDENCE