title: One-Step SnO2Nanotree Growth.
abstract: A comparison between Au, TiO2and self-catalysed growth of SnO2nanostructures using chemical vapour deposition is reported. TiO2enables growth of a nanonetwork of SnO2, whereas self-catalysed growth results in nanoclusters. Using Au catalyst, single-crystalline SnO2nanowire trees can be grown in a one-step process. Two types of trees are identified that differ in size, presence of a catalytic tip, and degree of branching. The growth mechanism of these nanotrees is based on branch-splitting and self-seeding by the catalytic tip, facilitating at least three levels of branching, namely trunk, branch and leaf.
authors.affiliation: Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Piet
authors.identifier: http://orcid.org/0000-0001-9745-5084
authors.initials: P
authors.lastname: Schönherr
authors.affiliation: Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, UK. Thorsten.Hesjedal@physics.ox.ac.uk.
authors.forename: Thorsten
authors.identifier: http://orcid.org/0000-0001-7947-3692
authors.initials: T
authors.lastname: Hesjedal
keywords: crystal growth; nanocatalysis; nanogrowth; nanostructures; physical vapor deposition