Research output: Contribution to journal › Article › peer-review
Sensors based on tin dioxide thin films for the detection of pre-explosive hydrogen concentrations. / Maksimova, N.K.; Sevastyanov, E.Y.; Chernikov, E.V.; Korusenko, P.M.; Nesov, Sergey N. ; Kim, S.V.; Biryukov, A.A.; Sergeychenko, N.V.; Davletkildeev, N.A.; Sokolov , D.V.
In: Sensors and Actuators, B: Chemical, Vol. 341, 130020, 15.08.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Sensors based on tin dioxide thin films for the detection of pre-explosive hydrogen concentrations
AU - Maksimova, N.K.
AU - Sevastyanov, E.Y.
AU - Chernikov, E.V.
AU - Korusenko, P.M.
AU - Nesov, Sergey N.
AU - Kim, S.V.
AU - Biryukov, A.A.
AU - Sergeychenko, N.V.
AU - Davletkildeev, N.A.
AU - Sokolov , D.V.
N1 - Publisher Copyright: © 2021 Elsevier B.V.
PY - 2021/8/15
Y1 - 2021/8/15
N2 - In this work, novel semiconductor sensors were developed for detecting high pre-explosive concentrations of H2 (0.1–2.5 vol%) with high selectivity and stability. The sensors were based on thin (∼100 nm) nanocrystalline SnO2 films produced by magnetron sputtering of dispersed Pt and Pd layers deposited on the surface and addition of 13–14 at% Pt in the bulk. Studies on their nanostructure, composition, electrical properties, and gas-sensitive characteristics were carried out. X-ray photoelectron and Raman spectroscopies revealed that in the process of stabilizing annealing in Pt/Pd/SnO2:Sb,Pt film platinum introduced into the bulk segregates on the surface of the SnO2 microcrystals in the form of Pt° metal clusters and dispersed Pt2+ ions. The dispersed Pt2+ ions form bonds with lattice oxygen and contribute to the overlap of conduction channels. In the sensor subjected to annealing at =723 K and =873K, the optimal situation is realized when under the action of low (n < 0.1 vol%) H2 concentrations, the condition 2d0 = dM is satisfied and G1/G0 = 9–12. In the range of 0.1–2.5 vol% H2, narrowing of the space-charge region favors the formation of a conducting layer, and at 2d0 ≤ dM there is a sharp increase in the values of the responses to G1/G0 = 220–250 at 2.5 vol%.
AB - In this work, novel semiconductor sensors were developed for detecting high pre-explosive concentrations of H2 (0.1–2.5 vol%) with high selectivity and stability. The sensors were based on thin (∼100 nm) nanocrystalline SnO2 films produced by magnetron sputtering of dispersed Pt and Pd layers deposited on the surface and addition of 13–14 at% Pt in the bulk. Studies on their nanostructure, composition, electrical properties, and gas-sensitive characteristics were carried out. X-ray photoelectron and Raman spectroscopies revealed that in the process of stabilizing annealing in Pt/Pd/SnO2:Sb,Pt film platinum introduced into the bulk segregates on the surface of the SnO2 microcrystals in the form of Pt° metal clusters and dispersed Pt2+ ions. The dispersed Pt2+ ions form bonds with lattice oxygen and contribute to the overlap of conduction channels. In the sensor subjected to annealing at =723 K and =873K, the optimal situation is realized when under the action of low (n < 0.1 vol%) H2 concentrations, the condition 2d0 = dM is satisfied and G1/G0 = 9–12. In the range of 0.1–2.5 vol% H2, narrowing of the space-charge region favors the formation of a conducting layer, and at 2d0 ≤ dM there is a sharp increase in the values of the responses to G1/G0 = 220–250 at 2.5 vol%.
KW - thin films
KW - tin dioxide (SnO2)
KW - hydrogen sensors
KW - platinum
KW - stability of sensor parameters
KW - Raman spectroscopy
KW - X-ray photoelectron spectroscopy
KW - thin films
KW - tin dioxide (SnO)
KW - hydrogen sensors
KW - platinum
KW - stability of sensor parameters
KW - Raman spectroscopy
KW - X-ray photoelectron spectroscopy
KW - Thin films
KW - Platinum
KW - Stability of sensor parameters
KW - Hydrogen sensors
KW - Tin dioxide (SnO )
KW - STABILITY
KW - ACETONE
KW - SENSITIVITY
KW - COMPOSITES
KW - CO
KW - NANOPARTICLES
KW - Tin dioxide (SnO2)
KW - NANOCRYSTALLINE SNO2
KW - GAS
KW - IMPROVEMENT
KW - SURFACE
UR - http://www.scopus.com/inward/record.url?scp=85105894404&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/e18e40ca-6c4d-3f1f-a7b3-41a8659f313c/
U2 - 10.1016/j.snb.2021.130020
DO - 10.1016/j.snb.2021.130020
M3 - Article
VL - 341
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
M1 - 130020
ER -
ID: 76224756