Davidenko V. A.1, Tolstyak G. V.2, Bayan E. M. 2, Petrov V. V. 1
1Institute of Nanotechnologies, Electronics and Equipment Engineering, Southern Federal University, Taganrog, Russia
2Southern Federal University, Rostov-on-Don, Russia
Email: vvpetrov@sfedu.ru
In this work, the gas-sensitive characteristics of gas sensors based on nanocrystalline tin dioxide films modified with 1, 3, and 5 mol.% La3+ ions obtained by oxidative pyrolysis were studied. The study of gas-sensitive properties to ethanol vapors with a concentration of 100 ppm was carried out at operating temperatures of 200-400 oC. Gas sensors based on 1La-99SnO2 film have the highest response values to ethanol vapors at a temperature of 200-250 oC, and sensors based on 3La-97SnO2 film have the highest response values at a temperature of 350-400 oC. Keywords: tin dioxide, lanthanum oxide, thin films, gas-sensitive properties, ethanol.
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