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Wyszukujesz frazę "Maksymych, Vitaliy" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Mechanisms of electrical conductivity, quantum capacity and negative capacitance effects in InSe nanohybrid
Autorzy:
Ivashchyshyn, Fedir
Maksymych, Vitaliy
Calus, Dariusz
Klapchuk, Myroslava
Baryshnikov, Glib
Galagan, Rostislav
Litvin, Valentina
Chabecki, Piotr
Bordun, Ihor
Powiązania:
https://bibliotekanauki.pl/articles/2173564.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
InSe
intercalation
hierarchical structures
impedance spectroscopy
density of states
negative capacity
struktury hierarchiczne
spektroskopia impedancyjna
ujemna pojemność
gęstość stanów
wtrącenie
Opis:
In this work, we present findings on the syntheses and study of properties of InSe nanohybrid. The introduction of guest component in GaSe matrix leads to an increase in inhomogeneities, which is clearly confirmed by the strengthening of the low-frequency horizontal branch of Nyquist diagrams. A constant magnetic field counteracts this effect and changes the behavior of the impedance hodograph at low frequencies to the opposite. Illumination leads to a colossal increase in quantum capacitance, which is clearly demonstrated in the Nyquist diagram. For the synthesized InSe nanohybrid the interesting behavior of the current-voltage characteristic is reported. As a result of studies of the synthesized InSe nanohybrid the effect of “negative capacity” is observed, the magnitude of which can be controlled by the electric field. Based on the constructed impedance model and proposed N-barrier model, the physical mechanisms of the investigated processes are suggested.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 1; e139958, 1--8
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of optical illumination and magnetic field on the electroconductive and polarization properties of clathrate GaSe>, synthesized under lighting
Autorzy:
Ivashchyshyn, Fedir
Maksymych, Vitaliy
Calus, Dariusz
Matulka, Dariya
Chabecki, Piotr
Kunynets, Andrii
Powiązania:
https://bibliotekanauki.pl/articles/2173684.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
GaSe
thiourea
anthracene
clathrate
impedance spectroscopy
quantum capacitance
memristive effect
tiomocznik
antracen
klatrat
spektroskopia impedancyjna
pojemność kwantowa
efekt memrystyczny
Opis:
GaSe> clathrate with a hierarchical subhost> type architecture was formed under illumination and its electrically conductive properties were studied. The method of impedance spectroscopy studied the frequency behavior of the real and imaginary parts of the complex total impedance in the range of 10 -3-10 6 Hz. The measurements were performed under normal conditions, in a permanent magnetic field (220 kA/m), or under light illumination (for a standard solar spectrum AM 1.5 G total available power is 982 W/m 2). The structure of the impurity energy spectrum at the Fermi level was investigated by the method of thermostimulated discharge in the temperature range from 240 to 340 K. Using Jebol-Pollack theoretical approaches based on impedance spectra, the parameters of the impurity energy spectrum were calculated, such as the density of states at the Fermi level, the jump radius , the scatter of trap levels near the Fermi level and the real density of deep traps. As evidenced by studies, illumination during clathrate synthesis, forms an internal electret polarization, which leads to abnormal behavior of the photoresistive effect and to the appearance of the memristive effect. The imposition of a permanent magnetic field during the measurement of complex resistance leads to the appearance of quantum capacitance.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 5; art. no. e143104
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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