Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Przeglądasz jako GOŚĆ
Tytuł pozycji:

Transient carrier transport and rearrangement of Schottky barrier layers under the action of a bias applied to the M/PZT/M structure.

Tytuł :
Transient carrier transport and rearrangement of Schottky barrier layers under the action of a bias applied to the M/PZT/M structure.
Autorzy :
Delimova, L. A.
Yuferev, V. S.
Pokaż więcej
Temat :
DRIFT diffusion models
LEAD zirconate titanate
SCHOTTKY barrier
ELECTRON mobility
POLARIZATION (Electricity)
Źródło :
Journal of Applied Physics; 2018, Vol. 124 Issue 18, pN.PAG-N.PAG, 8p, 1 Diagram, 6 Graphs
Czasopismo naukowe
A drift-diffusion model of unsteady carrier transport in an M/lead zirconate titanate (PZT)/M structure is proposed. It is assumed that the PZT film has electronic conductivity. Electrons are generated by oxygen vacancies and trapped by Ti+3 deep centers. It is assumed that electrons move in the electric field by hopping between titanium atoms, with an effective mobility that is considered constant. To account for the polarization, it is believed that, near the contacts, there are thin defective layers in which the polarization is zero, while outside these layers, the polarization does not vary across the film thickness and depends on the applied bias. The model was used to account for the formation of the current peak in the current–voltage curves, which is not caused by the domain switching and observed in epitaxial films only when the bias and polarization directions coincide. It is shown that a pronounced current peak is formed when (а) an accumulated space-charge layer appears near one of the contacts under the action of polarization and (b) this contact is cathode, which is only possible when the polarization and bias directions coincide. As a result, electrons flow between space-charge layers, and the film resistance first decreases and then starts to increase again, and this gives rise to a current peak. It is shown that this effect is purely nonstationary. The model also made it possible to estimate the basic parameters of the structure: electron mobility, density of oxygen vacancies, dielectric constant, defect layer thickness, and barrier height. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies