Nano letters, 2006-04, Vol.6 (4), p.599-604
2006
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- Autor(en) / Beteiligte
- Titel
- Influence of Nanowire Density on the Shape and Optical Properties of Ternary InGaAs Nanowires
- Ist Teil von
- Nano letters, 2006-04, Vol.6 (4), p.599-604
- Ort / Verlag
- Washington, DC: American Chemical Society
- Erscheinungsjahr
- 2006
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- We have synthesized ternary InGaAs nanowires on (111)B GaAs surfaces by metal−organic chemical vapor deposition. Au colloidal nanoparticles were employed to catalyze nanowire growth. We observed the strong influence of nanowire density on nanowire height, tapering, and base shape specific to the nanowires with high In composition. This dependency was attributed to the large difference of diffusion length on (111)B surfaces between In and Ga reaction species, with In being the more mobile species. Energy dispersive X-ray spectroscopy analysis together with high-resolution electron microscopy study of individual InGaAs nanowires shows large In/Ga compositional variation along the nanowire supporting the present diffusion model. Photoluminescence spectra exhibit a red shift with decreasing nanowire density due to the higher degree of In incorporation in more sparsely distributed InGaAs nanowires.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1530-6984eISSN: 1530-6992DOI: 10.1021/nl052189oTitel-ID: cdi_proquest_miscellaneous_67859190
- Format
- –
- Schlagworte
- Arsenicals - chemistry, Arsenicals - radiation effects, Chemical vapor deposition (including plasma-enhanced cvd, mocvd, etc.), Condensed matter: electronic structure, electrical, magnetic, and optical properties, Cross-disciplinary physics: materials science, rheology, Crystallization - methods, Exact sciences and technology, Gallium - chemistry, Gallium - radiation effects, Indium - chemistry, Indium - radiation effects, Light, Luminescent Measurements, Materials science, Materials Testing, Methods of deposition of films and coatings, film growth and epitaxy, Molecular Conformation, Nanoscale materials and structures: fabrication and characterization, Nanotubes - chemistry, Nanotubes - ultrastructure, Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation, Optical properties of specific thin films, Optics and Photonics, Other topics in nanoscale materials and structures, Particle Size, Physics, Quantum wires