Controlled integration of nanocrystals in inverted hexagonal nano-pits at the surface of light-emitting heterostructures

Sergio Manuel de Sousa Pereira, Manuel Antonio Martins, Tito Trindade, Ian M. Watson, Diane Zhu, Colin J. Humphreys

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Spontaneously formed nano-pits are exploited to effectively control the incorporation of gold nanocrystals (NCs) at the surface of light emitting InGaN/GaN heterostructures. Nano- engineering either the NCs size, or pit size, allows the number of NCs incorporated in each pit to be controlled, thus enabling research of well-defined assemblies of few gold NCs using an optically and electrically active substrate (see figure). The development of new nano-devices based on such hybrid nanostructures is briefly discussed.
Original languageEnglish
Pages (from-to)1038-1043
Number of pages6
JournalAdvanced Materials
Volume20
Issue number5
Early online date8 Feb 2008
DOIs
Publication statusPublished - Mar 2008

Keywords

  • epitaxial growth
  • light-emitting materials
  • nanocrystals
  • surface patterning

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