ZnO nanostructures grown on vertically aligned carbon nanotubes by laser-assisted flow deposition
authors Rodrigues, J; Mata, D; Fernandes, AJS; Neto, MA; Silva, RF; Monteiro, T; Costa, FM
nationality International
journal ACTA MATERIALIA
author keywords ZnO; VACNTs; SEM; Photoluminescence; Electrical properties
keywords ZINC-OXIDE NANOWIRES; FIELD-EMISSION; PARTICLES; NANOCRYSTALS; EVAPORATION; BEHAVIOR; ARRAYS
abstract Nanoscale junctions between conductive and semiconductor materials, by promoting a large interfacial area, are crucial to maximizing structural and electronic interactions, which are essential for energy conversion and storage technologies. Hierarchically structured hybrids of ZnO with carbon nanotubes (CNTs) are an example of this co-operative behavior. ZnO is characterized by a wide band gap and large exciton binding energy and CNTs ensure very high electrical conductivity. In the present work, a 3-D construction based on an array of 1-D vertically aligned (VA) CNTs constitute the conductive substrate for the growth of ZnO semiconductor nanoparticles using a laser-assisted flow deposition method. The functional interaction at the nanoscale between both materials is demonstrated by the enhancement of the high resolved near band edge recombination which accounts for an almost three orders of magnitude increase when compared with the green spectral band. A rectifying behavior was found for the ZnO/VACNT system. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 1359-6454
year published 2012
volume 60
issue 13-14
beginning page 5143
ending page 5150
digital object identifier (doi) 10.1016/j.actamat.2012.06.005
web of science category Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000308510900016
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 7.656
5 year journal impact factor 7.826
category normalized journal impact factor percentile 93.075
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg