The Sensitivity to Moisture Peculiarities
of Nanoscale Tin Dioxide Films Obtained
by Means of Polymers
A. P. Chebanenko, L. M. Filevska, V. S. Grinevych, and V. A. Smyntyna
1 Introduction
Tin dioxide, having a high chemical resistance and stability of the adsorption characteristics [1], is widely used as a material for gas sensors sensitive elements [2–4]. As
a degenerate semiconductor, transparent in film form, it is also in demand as the electrode material of solar cells, optical converters, and sensors [5–7]. The atmosphere,
in which devices with sensitive or electrode elements based on SnO 2 operate, as a
rule, contains active chemical compounds. The most widespread of them is conventional water vapor. Its influence on the operation of devices (sensors, solar cells,
optoelectronic devices, etc.) is possible when taking into account its impact on their
active elements [8]. Therefore, researchers deal with the interaction of water vapor
with tin dioxide, as well as with other materials of sensitive elements. The Japanese
company “Figaro” produces water vapor sensors on thick porous sintered SnO 2 layers
to monitor food vapor [9].
The electrical resistance and gas sensitivity of tin dioxide strongly depend on
the size of its grains [10], since it determines the number of surface states that are
important both for the adsorption interaction and the conductivity. From this point
of view, exactly the nanoscale forms of SnO 2 show the greatest gas sensitivity, as
a consequence of their high conductivity variability. On the other hand, the large
relative surface of such forms leads to the active adsorption of water, which was
shown in [11]. The presence of bound water in tin dioxide nanoscale forms up to
almost 800 °C was also shown there. As a rule, active adsorption of water vapor from
the atmosphere is already observed at room temperature. Moreover, as theoretically
shown in [12, 13], it can be both associative and dissociative in nature, and both
of these mechanisms affect the change in the electrical conductivity of tin dioxide.
A. P. Chebanenko · L. M. Filevska (B) · V. S. Grinevych · V. A. Smyntyna
Odessa Mechnikov National University, Odessa, Ukraine
e-mail: lfilevska@gmail.com
© Springer Nature Switzerland AG 2021
O. Fesenko and L. Yatsenko (eds.), Nanomaterials and Nanocomposites,
Nanostructure Surfaces, and Their Applications, Springer Proceedings
in Physics 246, https://doi.org/10.1007/978-3-030-51905-6_25
325
of Nanoscale Tin Dioxide Films Obtained
by Means of Polymers
A. P. Chebanenko, L. M. Filevska, V. S. Grinevych, and V. A. Smyntyna
1 Introduction
Tin dioxide, having a high chemical resistance and stability of the adsorption characteristics [1], is widely used as a material for gas sensors sensitive elements [2–4]. As
a degenerate semiconductor, transparent in film form, it is also in demand as the electrode material of solar cells, optical converters, and sensors [5–7]. The atmosphere,
in which devices with sensitive or electrode elements based on SnO 2 operate, as a
rule, contains active chemical compounds. The most widespread of them is conventional water vapor. Its influence on the operation of devices (sensors, solar cells,
optoelectronic devices, etc.) is possible when taking into account its impact on their
active elements [8]. Therefore, researchers deal with the interaction of water vapor
with tin dioxide, as well as with other materials of sensitive elements. The Japanese
company “Figaro” produces water vapor sensors on thick porous sintered SnO 2 layers
to monitor food vapor [9].
The electrical resistance and gas sensitivity of tin dioxide strongly depend on
the size of its grains [10], since it determines the number of surface states that are
important both for the adsorption interaction and the conductivity. From this point
of view, exactly the nanoscale forms of SnO 2 show the greatest gas sensitivity, as
a consequence of their high conductivity variability. On the other hand, the large
relative surface of such forms leads to the active adsorption of water, which was
shown in [11]. The presence of bound water in tin dioxide nanoscale forms up to
almost 800 °C was also shown there. As a rule, active adsorption of water vapor from
the atmosphere is already observed at room temperature. Moreover, as theoretically
shown in [12, 13], it can be both associative and dissociative in nature, and both
of these mechanisms affect the change in the electrical conductivity of tin dioxide.
A. P. Chebanenko · L. M. Filevska (B) · V. S. Grinevych · V. A. Smyntyna
Odessa Mechnikov National University, Odessa, Ukraine
e-mail: lfilevska@gmail.com
© Springer Nature Switzerland AG 2021
O. Fesenko and L. Yatsenko (eds.), Nanomaterials and Nanocomposites,
Nanostructure Surfaces, and Their Applications, Springer Proceedings
in Physics 246, https://doi.org/10.1007/978-3-030-51905-6_25
325