Revealing the local crystallinity of single silicon core–shell nanowires using tip-enhanced Raman spectroscopy

• Marius van den Berg,
• Ardeshir Moeinian,
• Arne Kobald,
• Yu-Ting Chen,
• Anke Horneber,
• Steffen Strehle,
• Alfred J. Meixner and
• Dai Zhang

Beilstein J. Nanotechnol. 2020, 11, 1147–1156, doi:10.3762/bjnano.11.99

• -catalyzed vapor–liquid–solid growth and silicon overcoating by thermal chemical vapor deposition. Local changes in the fraction of crystallinity in these silicon nanowires are characterized at an optical resolution of about 300 nm. Furthermore, we are able to resolve the variations in the intensity ratios

Substrate and Mg doping effects in GaAs nanowires

• Perumal Kannappan,
• Nabiha Ben Sedrine,
• Jennifer P. Teixeira,
• Maria R. Soares,
• Bruno P. Falcão,
• Maria R. Correia,
• Nestor Cifuentes,
• Emilson R. Viana,
• Marcus V. B. Moreira,
• Geraldo M. Ribeiro,
• Alfredo G. de Oliveira,
• Juan C. González and
• Joaquim P. Leitão

Beilstein J. Nanotechnol. 2017, 8, 2126–2138, doi:10.3762/bjnano.8.212

• channels as well as the role of defects on the optical properties are discussed. Experimental Mg-doped GaAs nanowires were grown on GaAs(111)B (sample A) and Si(111) (sample B) substrates by MBE in a Riber 2300 MBE reactor [14]. The nanowire growth was promoted through the Au-assisted vapor–liquid–solid

• growth mechanism by drop-coating the substrate with Au colloidal nanoparticles with average diameter of 5.0 ± 0.5 nm. The growth was performed at 615 °C for 90 min, under an As4 beam equivalent pressure (BEP) of 3.8 × 10−5 torr and Ga BEP of 7.2 × 10−7 torr. The Mg doping of the nanowires was achieved by

Self-assembly of silicon nanowires studied by advanced transmission electron microscopy

• Marta Agati,
• Guillaume Amiard,
• Vincent Le Borgne,
• Paola Castrucci,
• Richard Dolbec,
• Maurizio De Crescenzi,
• My Alì El Khakani and
• Simona Boninelli

Beilstein J. Nanotechnol. 2017, 8, 440–445, doi:10.3762/bjnano.8.47

• approaches used for the production of thin SiNWs. Keywords: silicon nanowires; transmission electron microscopy; vapor–liquid–solid growth; Introduction As the scaling down of the feature size of devices proceeds [1], new synthesis routes are being explored to produce materials with ultra-low