We report the self-assembly of core-shell GeTe/Sb Te nanowires (NWs) on Si (100), and SiO /Si substrates by metalorganic chemical vapour deposition, coupled to the vapour-liquid- solid mechanism, catalyzed by Au nanoparticles. Scanning electron microscopy, X-ray diffraction, micro-Raman mapping, high-resolution transmission electron microscopy, and electron energy loss spectroscopy were employed to investigate the morphology, structure, and composition of the obtained core and core-shell NWs. A single crystalline GeTe core and a polycrystalline Sb Te shell formed the NWs, having core and core-shell diameters in the range of 50-130 nm and an average length up to 7 µm.

MOCVD Growth of GeTe/Sb2Te3 Core-Shell Nanowires

Kumar Arun;Cecchini Raimondo;Wiemer Claudia;Mussi Valentina;De Simone Sara;Calarco Raffaella;Scuderi Mario;Nicotra Giuseppe;Longo Massimo
2021

Abstract

We report the self-assembly of core-shell GeTe/Sb Te nanowires (NWs) on Si (100), and SiO /Si substrates by metalorganic chemical vapour deposition, coupled to the vapour-liquid- solid mechanism, catalyzed by Au nanoparticles. Scanning electron microscopy, X-ray diffraction, micro-Raman mapping, high-resolution transmission electron microscopy, and electron energy loss spectroscopy were employed to investigate the morphology, structure, and composition of the obtained core and core-shell NWs. A single crystalline GeTe core and a polycrystalline Sb Te shell formed the NWs, having core and core-shell diameters in the range of 50-130 nm and an average length up to 7 µm.
2021
Istituto per la Microelettronica e Microsistemi - IMM
Core-shell
GeTe/Sb Te 2 3
Metalorganic chemical vapor deposition (MOCVD)
Nanowires
File in questo prodotto:
File Dimensione Formato  
prod_455055-doc_175709.pdf

accesso aperto

Descrizione: MOCVD Growth of GeTeSb2Te3 CoreShell Nanowires
Tipologia: Versione Editoriale (PDF)
Licenza: Creative commons
Dimensione 3.28 MB
Formato Adobe PDF
3.28 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/397011
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 6
social impact