Férid Ben Nasr, Hajer Guermazi, Samir Guermazi

Cathodoluminescence Characterization: Applications on Nitrides

• Broschiertes Buch

Produktbeschreibung

This work presents a two-dimensional computational model of cathodoluminescence (CL) intensity that takes into account the lateral and depth scattering of generated carriers, internal absorption (alpha), rate of generation, intrinsic and extrinsic radiative recombination mechanisms, and experimental conditions of electron excitation. An experimental study on GaN using this technique is presented followed by a comparison and validation. The study of the influence of some physical parameters such as scattering length, surface recombination velocity of minority carriers and absorption coefficient on the intensity of LC. Emphasis was placed on the dependence of the LC signal on excitation parameters. To interpret the experimental results and validate our model we studied the effect of stress and the thermal effect accompanying the electronic excitation on the fundamental peak evolution of CL. This study also allowed us to explain the variation in LC intensity with competitive alpha phenomena, the local effect of temperature and the effect of stresses present in the material.

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Produktdetails

• Verlag: Our Knowledge Publishing
• Seitenzahl: 68
• Erscheinungstermin: 21. Juli 2020
• Englisch
• Abmessung: 220mm x 150mm x 5mm
• Gewicht: 119g
• ISBN-13: 9786202635691
• ISBN-10: 620263569X
• Artikelnr.: 59870864

Autorenporträt

Férid Ben Nasr, profesor asistente de la Facultad de Ciencias de Sfax (FSS). Es un miembro activo de la unidad de investigación: "Física de materiales aislantes y semi-aislantes" en el FSS. Su trabajo de investigación se centra en el modelado y la caracterización por catodoluminiscencia (CL): aplicación a los nitruros.