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Elaboration et étude de la structure et des mécanismes de luminescence de nanocristaux de silicium de taille contrôlée.

Abstract : The mechanisms of light emission of size-controlled silicon nanocrystals (Si-nc) are studied in this work. The Si-nc are confined in a SiO2 matrix. The films structure is characterized by infrared absorption spectroscopy, X-ray diffraction and transmission electron microscopy. The size distribution of the Si-nc is measured, showing that the size is controlled with a narrow dispersion.
The luminescence mechanisms are studied by continuous wave and time-resolved photoluminescence spectroscopy from 4 K to 300 K. Correlated with structure investigations, the results show that the matrix quality and the Si-nc size control the luminescence properties. The recombination mechanisms of the carriers are studied. Finally, the electronic transport in the films is characterised. The electroluminescence is studied and show the role played by the Si-nc on the luminescence.
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https://tel.archives-ouvertes.fr/tel-00011284
Contributor : Olivier Jambois <>
Submitted on : Tuesday, January 3, 2006 - 3:43:39 PM
Last modification on : Thursday, November 12, 2020 - 3:42:03 PM
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Olivier Jambois. Elaboration et étude de la structure et des mécanismes de luminescence de nanocristaux de silicium de taille contrôlée.. Physique [physics]. Université Henri Poincaré - Nancy I, 2005. Français. ⟨tel-00011284⟩

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