Morphology and microstructure of core-shell GaAs/GaxAl1-xAs nanowires investigated by He-ion microscopy and X-ray reciprocal space mapping

Abstract

In this work we present new results on the morphological and microstructural properties of GaAs-AlxGa1-xAs (x?0.24) core-shell nanowires (NWs) epitaxially grown on (111)B-GaAs substrates by Au-catalyst assisted metalorganic vapor phase epitaxy (MOVPE). Optimized growth conditions allowed us to fabricate highly-dense arrays of vertically-aligned (i.e., along the <111> crystallographic orientation) NWs. The NW arrays were investigated by Helium Ion microscopy (HeIM) and X-ray double- and triple-axis measurements and reciprocal space mapping (RSM). We demonstrate that these techniques can be employed in order to correlate some intrinsically local morphological information with statistically relevant (i.e. averaged over millions-to-billions of NWs) data on the NW structural properties.


Autore Pugliese

Tutti gli autori

  • M. Re; F. Di Benedetto; E. Pesce; I. Miccoli; P. Prete; N. Lovergine ; L. Tapfer

Titolo volume/Rivista

MRS proceedings


Anno di pubblicazione

2014

ISSN

1946-4274

ISBN

Non Disponibile


Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile


Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

Non Disponibile


Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile