Enhanced plasmonic properties of gold-catalysed semiconductor nanowires

Denys Naumenko*, Valentina Zannier, Vincenzo Grillo, Damiano Cassese, Giacomo Priante, Simone Dal Zilio, Silvia Rubini, Marco Lazzarino

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

A key challenge for the development of plasmonic nanodevices is their integration into active semiconducting structures. Gold-catalysed semiconductor nanowires are promising candidates for their bottom-up growth process that aligns a single gold nanoparticle at each nanowire apex. Unfortunately these show extremely poor plasmonic properties. In this work, we propose a way to enhance their plasmonic resonance up to those of ideal and isolated gold nanoparticles. A suitable purification protocol compatible with GaAs and ZnSe molecular beam epitaxy of nanowires is used to produce plasmonic active nanowires, which were used to enhance the Raman signal of pentacene and graphene oxide. Enhancement factors up to three orders of magnitude are demonstrated. This journal is

Original languageEnglish
Pages (from-to)13651-13659
Number of pages9
JournalNanoscale
Volume6
Issue number22
DOIs
Publication statusPublished - 21 Nov 2014
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)

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