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Sensor properties of ZnO:Al nanofibres obtained by electrospinning

Maziarz W., Rydosz A., Wysocka K., Pisarkiewicz T.

Materials Science Poland

2014

Vol. 32, No. 2

176--180

An electrospinning technology have been developed to obtain zinc oxide nanofibres doped with aluminum. Properties of the obtained nanostructures can be controlled by both the composition of a precursor and subsequent annealing treatment. The gas sensors manufactured with the use of ZnO:Al nanofibres exhibit good response to NO2 at relatively low operating temperatures. For some samples it was observed that interaction with ambient NO2 gas causes the change of conductivity from n-type to p-type at higher operating temperatures. This phenomenon was not observed for the samples annealed at higher temperature.