Funct. Mater. 2023; 30 (1): 28-34.

doi:https://doi.org/10.15407/fm30.01.28

Influence of topological features and U^--centers on electric charge carrying at strong electric fields in Ge_xAs_yTe_100-x-y amorphous films

A.I.Isayev¹, S.I.Mekhtiyeva¹, H.I.Mammadova¹, R.M.Rzayev², R.I.Alekberov^1,2

¹Institute of Physics, Azerbaijan National Academy of Sciences, 13 G.Javid Ave., 1143 Baku, Azerbaijan
²Azerbaijan State University of Economics (UNEC), 6 Istiqlaliyyat Str., 1001 Baku, Azerbaijan

Abstract:

As a result of studying the current-voltage characteristics of Te-Ge_xAs_yTe_100-x-y-Al structure at a negative potential of the tellurium electrode, it have been found that at applied electric field voltage exceeding 5·10⁴ V/cm, the current-voltage dependence has the N-shape and exhibits instability in the form of irregular current oscillations. The observed features of electric charge transfer under the influence of strong electric fields are interpreted taking into account the topological features of amorphous chalcogenides and the role of U^--centers in the process of generation and recombination of electric charge carriers in the studied structure.

Keywords:

chalcogenide glass, amorphous, non-crystalline, switching effect.

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Funct. Mater. 2023; 30 (1): 28-34.

Current number: