Selective growth and ordering of SiGe nanowires for band gap engineering

Download
  1. Get@NRC: Selective growth and ordering of SiGe nanowires for band gap engineering (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1088/0957-4484/25/33/335303
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleNanotechnology
ISSN0957-4484
Volume25
Issue33
Article number335303
Subjectnanowires (NWs); ordering; molecular beam epitaxy (MBE); selective growth; focused ion beam (FIB) patterning; photoluminescence
AbstractSelective growth and self-organization of silicon-germanium (SiGe) nanowires (NWs) on focused ion beam (FIB) patterned Si(111) substrates is reported. In its first step, the process involves the selective synthesis of Au catalysts in SiO2-free areas; its second step involves the preferential nucleation and growth of SiGe NWs on the catalysts. The selective synthesis process is based on a simple, room-temperature reduction of gold salts (Au3+Cl?/4 ) in aqueous solution, which provides well-organized Au catalysts. By optimizing the reduction process, we are able to generate a bidimensional regular array of Au catalysts with self-limited sizes positioned in SiO2 -free windows opened in a SiO /Si2 (111) substrate by FIB patterning. Such Au catalysts subsequently serve as preferential nucleation and growth sites of well-organized NWs. Furthermore, these NWs with tunable position and size exhibit the relevant features and bright luminescence that would find several applications in optoelectronic nanodevices.
Publication date
LanguageEnglish
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
NPARC number21272879
Export citationExport as RIS
Report a correctionReport a correction
Record identifierc1ff37d8-aef1-4549-abea-7d6c8fc544a2
Record created2014-12-03
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)