A silicon nanowire photodetector using Au plasmonic nanoantennas

Sang Won Jee, Keya Zhou, Dong Wook Kim, Jung Ho Lee

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


We suggest a silicon nanowire (SiNW) photodetector side-contacted with hemispherical Au nanoantennas (NAs) that can remarkably amplify the intensity of the near-infrared optical field. The plasmonic NA suppresses visible-range guided mode excitation in SiNW, which enables our photodetector to possess a near-infrared-selective response and overcome the inherent poor optical absorption of Si. The NA can form Schottky contacts with SiNWs for enhancing carrier collection. The vertical NW array also has the geometrically beneficial effects of wide tolerance in light polarization with reduced material consumption.

Original languageEnglish
Article number29
JournalNano Convergence
Issue number1
StatePublished - Dec 2014


  • Optical absorption
  • Photodetector
  • Plasmonic nanoantennas
  • Plasmonics
  • Si nanowire
  • Subwavelength structure


Dive into the research topics of 'A silicon nanowire photodetector using Au plasmonic nanoantennas'. Together they form a unique fingerprint.

Cite this