Simulated Contrast of Two Dislocations
- Authors: Ledra M.1,2, El Hdiy A.3
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Affiliations:
- Centre Universitaire Abdelhafid BOUSSOUF-Mila
- Laboratoire Matériaux semiconducteurs métalliques, Université de Biskra
- Thermique, Institut des Sciences de l’Ingénieur, Université de Reims, Champagne-Ardenne
- Issue: Vol 53, No 4 (2019)
- Pages: 442-446
- Section: Surfaces, Interfaces, and Thin Films
- URL: https://journals.rcsi.science/1063-7826/article/view/205931
- DOI: https://doi.org/10.1134/S1063782619040195
- ID: 205931
Cite item
Abstract
A three-dimensional Monte Carlo simulation algorithm is used to study the contrast of two dislocations perpendicular to the irradiated surface of an n-doped silicon sample in the electron beam induced current mode. The dislocations are positioned in the irradiation trajectory, and each of both is considered as a cylinder where the minority carrier diffusion length varies abruptly from a low inside dislocations up to a high value outside dislocations. The EBIC contrast was obtained by simulating the random diffusion of carriers generated at point-like sources randomly distributed within the generation volume. Results are analyzed on the basis of change in the generation volume in the bulk of the sample and of carrier trapping process inside dislocations. The EBIC contrast increases with the increase of the electron beam energy. It also increases when the minority diffusion length inside dislocations, or their separating distance decreases.
About the authors
M. Ledra
Centre Universitaire Abdelhafid BOUSSOUF-Mila; Laboratoire Matériaux semiconducteurs métalliques, Université de Biskra
Author for correspondence.
Email: Ledra.mohammed@gmail.com
Algeria, BP 26, Mila, R.P. 43000; BP. 145, Biskra, R.P. 07000
A. El Hdiy
Thermique, Institut des Sciences de l’Ingénieur, Université de Reims, Champagne-Ardenne
Author for correspondence.
Email: abdelillah.elhdiy@univ-reims.fr
France, BP 1039, Reims cedex 2, Reims, 51687