title: Study of Self-Induced Growth of AlGaAs Nanoneedles on Silicon Substrates Using Metal Organic Chemical Vapor Deposition Technique.
abstract: A simple catalyst free growth method was used for the growth of single crystalline AlGaAs nanoneedles on Si substrate by metal organic chemical vapor deposition (MOCVD) technique. The growth mechanism of catalyst free growth of nanoneedles was investigated. The effect of growth rate, growth temperature and V/III ratio was studied in detail. The growth of nanoneedles required a careful optimization of the growth conditions. The formation of well-faceted nanoneedles with hexagonal cross-section was found to be influenced by the growth parameters. Based on these studies, the growth mechanism has been explained using nucleation theory. The growth of nanoneedles was believed to proceed via Vapor-Solid (VS) growth mechanism after the initial AlGaAs cluster formation depending on the growth conditions.
authors.forename: R K
authors.initials: RK
authors.lastname: Bag
authors.forename: S
authors.initials: S
authors.lastname: Singh
authors.forename: R
authors.initials: R
authors.lastname: Tyagi
authors.forename: D K
authors.initials: DK
authors.lastname: Pandya
authors.forename: R
authors.initials: R
authors.lastname: Singh