title: Defect-free <110> zinc-blende structured InAs nanowires catalyzed by palladium.
abstract: We report the epitaxial growth of defect-free zinc-blende structured InAs nanowires on GaAs{111}(B) substrates using palladium catalysts in a metal-organic chemical vapor deposition reactor. Through detailed morphological, structural, and chemical characterizations using electron microscopy, it is found that these defect-free InAs nanowires grew along the <1[combining overline]1[combining overline]0> directions with four low-energy {111} faceted side walls and {1[combining overline]1[combining overline]3[combining overline]} nanowire/catalyst interfaces. It is anticipated that these defect-free <1[combining overline]1[combining overline]0> nanowires benefit from the fact that the nanowire/catalyst interfaces does not contain the {111} planes, and the nanowire growth direction is not along the <111> directions. This study provides an effective approach to control the crystal structure and quality of epitaxial III-V nanowires.
authors.affiliation: Materials Engineering, The University of Queensland, QLD 4072, Australia.
authors.forename: Hongyi
authors.initials: H
authors.lastname: Xu
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Yanan
authors.initials: Y
authors.lastname: Guo
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Liao
authors.forename: Qiang
authors.initials: Q
authors.lastname: Gao
authors.forename: H Hoe
authors.initials: HH
authors.lastname: Tan
authors.forename: Chennupati
authors.initials: C
authors.lastname: Jagadish
authors.forename: Jin
authors.initials: J
authors.lastname: Zou
mesh_terms: D001152:Arsenicals / Q000737:chemistry*; D002384:Catalysis; D007204:Indium / Q000737:chemistry*; D008422:Materials Testing; D008670:Metals / Q000737:chemistry; D008855:Microscopy, Electron, Scanning / Q000379:methods; D053770:Nanowires / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D012666:Semiconductors; D013499:Surface Properties; D013696:Temperature; D015032:Zinc / Q000737:chemistry*
chemical_list: D001152:Arsenicals; D008670:Metals; D007204:Indium; D010165:Palladium; C076773:indium arsenide; D015032:Zinc