Growth and characterization of wurtzite GaP nanowires with control over axial and radial growth by use of HCl in-situ etching

Summary, in English

We report on the synthesis of non-tapered wurtzite (WZ) GaP nanowires by use of in-situ etching and the structural and optical characterization thereof. HCl was evaluated as an in-situ etchant in order to impede the onset of radial growth since the WZ crystal phase in GaP nanowires preferentially grows at relatively high growth temperatures around 600 degrees C, at which strong radial growth typically occurs. Transmission electron microscopy measurements confirmed non-tapered WZ GaP nanowires after growth. Photoluminescence characterization revealed defect related red emission, possibly related to transitions within the bandgap. Raman measurements show that the phonon energies in WZ GaP are very close in energy to the phonon energies in zinc blende GaP. (C) 2013 Elsevier B.V. All rights reserved.

• Författare: Alexander Berg; Sebastian Lehmann; Neimantas Vainorius; Anders Gustafsson; Mats-Erik Pistol; Reine Wallenberg; Lars Samuelson; Magnus Borgström
• Avdelning/ar: Fasta tillståndets fysik; Centrum för analys och syntes; NanoLund: Centre for Nanoscience
• Publiceringsår: 2014
• Språk: Engelska
• Sidor: 47-51
• Publikation/Tidskrift/Serie: Journal of Crystal Growth
• Volym: 386
• Länkar: http://dx.doi.org/10.1016/j.jcrysgro.2013.09.043
• Dokumenttyp: Artikel i tidskrift
• Förlag: Elsevier
• Ämne: Condensed Matter Physics; Chemical Sciences
• Nyckelord: Nanostructures; Growth from vapor; Metal organic vapor phase epitaxy; Nanomaterials
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0022-0248