Get access

Design Considerations for Semiconductor Nanowire–Plasmonic Nanoparticle Coupled Systems for High Quantum Efficiency Nanowires

Authors

  • Sudha Mokkapati,

    Corresponding author
    1. Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200, Australia
    • Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200, Australia.

    Search for more papers by this author
  • Dhruv Saxena,

    1. Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200, Australia
    Search for more papers by this author
  • Hark Hoe Tan,

    1. Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200, Australia
    Search for more papers by this author
  • Chennupati Jagadish

    1. Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200, Australia
    Search for more papers by this author

Abstract

The optimal geometries for reducing the radiative recombination lifetime and thus enhancing the quantum efficiency of III–V semiconductor nanowires by coupling them to plasmonic nanoparticles are established. The quantum efficiency enhancement factor due to coupling to plasmonic nanoparticles reduces as the initial quality of the nanowire increases. Significant quantum efficiency enhancement is observed for semiconductors only within about 15 nm from the nanoparticle. It is also identified that the modes responsible for resonant enhancement in the quantum efficiency of an emitter in the nanowire are geometric resonances of surface plasmon polariton modes supported at the nanowire/nanoparticle interface.

Ancillary