Influence of Nanowire Density on the Shape and Optical Properties of Ternary InGaAs Nanowires
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Kim, Yong; Joyce, Hannah J; Gao, Qiang; Jagadish, Chennupati; Paladugu, Mohanchand; Zou, Jin; Suvorova, A A; Tan, Hark Hoe
Description
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...[Show more]
dc.contributor.author | Kim, Yong | |
---|---|---|
dc.contributor.author | Joyce, Hannah J | |
dc.contributor.author | Gao, Qiang | |
dc.contributor.author | Jagadish, Chennupati | |
dc.contributor.author | Paladugu, Mohanchand | |
dc.contributor.author | Zou, Jin | |
dc.contributor.author | Suvorova, A A | |
dc.contributor.author | Tan, Hark Hoe | |
dc.date.accessioned | 2015-12-13T23:03:38Z | |
dc.identifier.issn | 1530-6984 | |
dc.identifier.uri | http://hdl.handle.net/1885/85021 | |
dc.description.abstract | 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. | |
dc.publisher | American Chemical Society | |
dc.source | Nano Letters | |
dc.subject | Keywords: Colloids; Diffusion; Metallorganic chemical vapor deposition; Photoluminescence; Semiconducting indium gallium arsenide; X ray spectrographs; Diffusion models; InGaAs nanowires; Nanowire density; Nanowire height; Nanostructured materials; gallium; gallium | |
dc.title | Influence of Nanowire Density on the Shape and Optical Properties of Ternary InGaAs Nanowires | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.description.refereed | Yes | |
local.identifier.citationvolume | 6 | |
dc.date.issued | 2006 | |
local.identifier.absfor | 100799 - Nanotechnology not elsewhere classified | |
local.identifier.ariespublication | MigratedxPub13220 | |
local.type.status | Published Version | |
local.contributor.affiliation | Kim, Yong, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Joyce, Hannah J, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Gao, Qiang, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Tan, Hoe Hark, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Jagadish, Chennupati, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Paladugu, Mohanchand, University of Queensland | |
local.contributor.affiliation | Zou, Jin, University of Queensland | |
local.contributor.affiliation | Suvorova, A A, University of Western Australia | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 4 | |
local.bibliographicCitation.startpage | 599 | |
local.bibliographicCitation.lastpage | 604 | |
local.identifier.doi | 10.1021/nl052189o | |
dc.date.updated | 2015-12-12T07:50:25Z | |
local.identifier.scopusID | 2-s2.0-33646401123 | |
Collections | ANU Research Publications |
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