Enhancement of room temperature sub-bandgap light emission from silicon photonic crystal nano cavity by Purcell effect

Abdul Shakoor, R. Lo Savio, S. L. Portalupi, D. Gerace, L. C. Andreani, M. Galli, Thomas Fraser Krauss, Liam O'Faolain

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We report the enhancement of sub-bandgap photoluminescence from silicon via the Purcell effect. We couple mission from silicon, which is believed to be due to hydrogenin corporation in to the lattice, to a photonic crystal (PhC) nanocavity. We observe an up to 300-fold enhancement of the emission at room temperature at 1550 nm, as compared to an unpatterned sample, which is then comparable to the silicon band-edge emission. We discuss the possibility of enhancing this emission even further by introducing additional defects by ion implantation, or by treating the silicon PhC nano cavity with hydrogen plasma. (c) 2011 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)4027-4031
Number of pages5
JournalPhysica B : Condensed Matter
Volume407
Issue number20
Early online date26 Dec 2011
DOIs
Publication statusPublished - 15 Oct 2012
EventConference on Wave Propagation - From Electrons to Photonic Crystals and Metamaterials (WavePro) in Honor of Costas M. Soukoulis' 60th Birthday - Rethymno, Greece
Duration: 8 Jun 201111 Jun 2011

Keywords

  • DEFECT GENERATION
  • PLASMA TREATMENT
  • Silicon light emission
  • Silicon photonics
  • SI
  • Nanocavity
  • Photonic crystal
  • LUMINESCENCE
  • HYDROGEN
  • Purcell effect
  • Defect luminescence

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