In situ impedance spectroscopy of filament formation by resistive switches in polymer based structures.

Autor: Kotova MS; Department of Physics, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation. kotova@physics.msu.ru., Drozdov KA; Department of Physics, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation., Dubinina TV; Department of Chemistry, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation.; Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny proezd, 142432, Chernogolovka, Moscow Region, Russian Federation., Kuzmina EA; Department of Chemistry, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation., Tomilova LG; Department of Chemistry, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation.; Institute of Physiologically Active Compounds, Russian Academy of Sciences, 1 Severny proezd, 142432, Chernogolovka, Moscow Region, Russian Federation., Vasiliev RB; Department of Chemistry, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation., Dudnik AO; Department of Physics, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation., Ryabova LI; Department of Chemistry, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation., Khokhlov DR; Department of Physics, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russian Federation.; P.N. Lebedev Physical Institute, Leninskiy prosp. 53, 119991, Moscow, Russia.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2018 Jun 13; Vol. 8 (1), pp. 9080. Date of Electronic Publication: 2018 Jun 13.
DOI: 10.1038/s41598-018-27332-1
Abstrakt: It is shown that the impedance spectroscopy allows identification of the resistive switching mechanisms in complex composite structures. This statement was demonstrated on an example of organic based sandwich structures with a modified polymer matrix as an active element. The impedance spectroscopy scanning was performed for a series of intermediate states formed within the switching process. Analysis of the experimentally obtained impedance spectra shows that the electron transport is provided by delocalized charge carriers and proceeds via conducting filaments formed in a highly resistive matrix. The filament configuration changes during the switching. With the shift from isolating to conducting states, single isolated filaments are reorganized into a branched network.
Databáze: MEDLINE
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