Morphology and microstructure of core-shell GaAs/Ga

Marilena Re, Francesca Di Benedetto, Emanuela Pesce, Ilio Miccoli, Paola Prete, Nicola Lovergine, Leander Tapfer

Research output: Contribution to conferencePaper


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 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.
Original languageEnglish
Publication statusPublished - 2014
Externally publishedYes
Event2014 MRS Spring Meeting - San Francisco, United States
Duration: 1 Jan 2014 → …


Conference2014 MRS Spring Meeting
CountryUnited States
CitySan Francisco
Period1/1/14 → …


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Re, M., Di Benedetto, F., Pesce, E., Miccoli, I., Prete, P., Lovergine, N., & Tapfer, L. (2014). Morphology and microstructure of core-shell GaAs/Ga. Paper presented at 2014 MRS Spring Meeting, San Francisco, United States.