Charge transport mechanism and memristive effect in a thin film based on fluorinated polyaryl ether containing 1,4-dioxo-thioxanthene-9-one in-chain blocks
DOI:
https://doi.org/10.33910/2687-153X-2025-6-1-9-16Keywords:
fluorinated polymers, charge transport, memristor, trap, photoluminescence, photoluminescence excitation spectraAbstract
A new fluorinated thermally stable polyaryl ether with electron-withdrawing thioxanthenone in-chain block (FPAE-ThS) was synthesized through the interaction of perfluorobiphenyl with 1,4-dihydroxy-9H-thioxanthene-9-one. The charge transport mechanism within the FPAE-ThS film is governed by the phonon-assisted tunneling between neighbouring traps. The thermal (1.0 eV) and optical trap (2.0 eV) ionization energies, as well as the trap concentration (N = 1.0 × 1020 cm–3), are determined. The value of half Stokes shift (1.1 eV), obtained from the photoluminescence and photoluminescence excitation spectra, is consistent with the results of charge transport simulation. Furthermore, a prototype memory device based on the FPAE-ThS film demonstrates the resistive switching behavior with a four-order difference in the resistance between its low- and high-resistance states.
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Copyright (c) 2025 Andrei A. Gismatulin, Vladimir A. Pustovarov, Danila S. Odintsov, Irina A. Os’kina, Inna K. Shundrina, Ivan A. Azarov, Leonid A. Shundrin, Vladimir A. Gritsenko
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