The authors report about preparation and characterization of thin film
s of MoO3 as a material for gas-sensing applications. Structural inves
tigation of the films is carried out by electron microscopy and X-ray
diffraction techniques. The sensing behavior of the MoO3 films was tes
ted to NO2, showing capability to detect a few ppm of NO2 with conside
rably short response time. (C) 1998 Elsevier Science S.A. All rights r
eserved.