Influence of Nb-doping on hydrogen sensing performance of WO3 nanowires

Tungsten oxide nanowires were synthetized by thermal oxidation in
vacuum, using a custom tubular furnace, adding niobium in the growth
process to evaluate the influence of niobium in the conductometric
response towards hydrogen gas. Samples were characterized by XRD and
Raman spectroscopy, to confirm the crystalline structure of the
material. The conductometric response of fabricated sensors was
evaluated towards hydrogen gas. The addition of small percentage of
niobium during the synthesis enhance the hydrogen sensing performance of
the devices. (C) 2016 The Authors. Published by Elsevier Ltd.