@ARTICLE{Szafraniak_Bartłomiej_Impedance_2020,
 author={Szafraniak, Bartłomiej and Kusior, Anna and Radecka, Marta and Zakrzewska, Katarzyna},
 volume={vol. 27},
 number={No 3},
 journal={Metrology and Measurement Systems},
 pages={417-425},
 howpublished={online},
 year={2020},
 publisher={Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation},
 abstract={Alternating current a.c. measurements enable to understand the physical and chemical processes occurring in semiconductor materials. Impedance spectroscopy has been successfully applied to study the responses of gas sensors based on metal oxides, such as TiO2, SnO2 and TiO2/SnO2 nanocomposites. This work is devoted to dynamic measurements of hydrogen sensor behaviour over the temperature range of 300–450◦C. Frequency dependence of the impedance signal gives evidence that 50 mol% TiO2/50 mol% SnO2 nanocomposites should be treated as resistive-type sensors. Temporal evolution of the response to 500 ppm H2 at 320◦C indicates a very short response time and much longer recovery.},
 type={Article},
 title={Impedance spectroscopy in H2 sensing with TiO2/SnO2 nanomaterials},
 URL={http://journals.pan.pl/Content/117623/PDF/art03.pdf},
 doi={10.24425/mms.2020.134588},
 keywords={impedance spectroscopy, TiO2, SnO2, hydrogen detection, resistive-type gas sensors},
}