ZnO thin films of different surface morphology were prepared using
spray pyrolysis technique by varying precursor salt and solvent. The
field emission scanning electron micrograph show the presence of
nanofibers, nanoparticles, nanorods and nanosponges like structure
owing to the change of precursor solution. The sensing response of
ZnO films of different morphology towards trimethylamine (TMA)
at room temperature (30 C) were analyzed and reported. The
results portray that the nanofibers have moderate sensing abilities
towards TMA vapors and out performs the other nanostructures
with its response and recovery time being 15 s and 14 s respectively.