Transparently Wrap-Gated Semiconductor Nanowire Arrays For Studies Of Gate-Controlled Photoluminescence

Gustav Nylund, Kristian Storm, Henrik Torstensson, Jesper Wallentin, Magnus Borgström, Dan Hessman, Lars Samuelson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

We present a technique to measure gate-controlled photoluminescence (PL) on arrays of semiconductor nanowire (NW) capacitors using a transparent film of Indium-Tin-Oxide (ITO) wrapping around the nanowires as the gate electrode. By tuning the wrap-gate voltage, it is possible to increase the PL peak intensity of an array of undoped InP NWs by more than an order of magnitude. The fine structure of the PL spectrum reveals three subpeaks whose relative peak intensities change with gate voltage. We interpret this as gate-controlled state-filling of luminescing quantum dot segments formed by zincblende stacking faults in the mainly wurtzite NW crystal structure.
Original languageEnglish
Title of host publicationPhysics of Semiconductors
PublisherAmerican Institute of Physics (AIP)
Pages427-428
Volume1566
DOIs
Publication statusPublished - 2013
Event31st International Conference on the Physics of Semiconductors (ICPS) - Zurich, SWITZERLAND
Duration: 2012 Jul 292012 Aug 3

Publication series

Name
Volume1566
ISSN (Print)1551-7616
ISSN (Electronic)0094-243X

Conference

Conference31st International Conference on the Physics of Semiconductors (ICPS)
Period2012/07/292012/08/03

Subject classification (UKÄ)

  • Condensed Matter Physics
  • Nano Technology

Free keywords

  • nanowire
  • wrap-gate
  • photoluminescence
  • InP
  • ITO

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