Funct. Mater. 2024; 31 (1): 18-25.

doi:https://doi.org/10.15407/fm31.01.18

Crystallization of amorphous Sb2Se3 films according to TEM with in situ video recording

A.G. Bagmut

National Technical University "Kharkiv polytechnic institute", 2 Kyrpychovа St., 61002 Kharkiv, Ukraine

Abstract: 

The structure and kinetics of the crystallization process in amorphous Sb2Se3 films were studied using electron diffraction and transmission electron microscopy (TEM) with in situ video recording. It is found that under the action of electron irradiation, the film crystallizes in an island polymorphous mode with a relative length δ0 ~ 200. Direct electron microscopic observations have shown that new nuclei appear at each stage of growth and so-called continuous nucleation occurs. Time dependence of the volume fraction of crystallized particles is exponential, described by the Johnson-Mehl-Avrami-Kolmogorov (JMAK) equation. The closest integer value of the Avrami exponent is n = 2.

Keywords: 
amorphous state, kinetics, Sb<sub>2</sub>Se<sub>3</sub>, crystallization; electron microscopy, videorecording.

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