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Appl. Phys. Lett. 96, 183105 (2010); http://dx.doi.org/10.1063/1.3427386 (3 pages)

Effect of total pressure on the formation and size evolution of silicon quantum dots in silicon nitride films

B. Rezgui1, A. Sibai1, T. Nychyporuk1, M. Lemiti1, G. Bremond1, D. Maestre2, and O. Palais2

1Université de Lyon, Institut des Nanotechnologies de Lyon INL-UMR5270, CNRS, INSA de Lyon, Villeurbanne F-69621, France
2IM2NP, CNRS UMR 6242, Université Aix-Marseille, Avenue Escadrille Normandie Niemen, Case 142, 13397, Marseille Cedex 20, France

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(Received 30 January 2010; accepted 15 April 2010; published online 5 May 2010)

The size of silicon quantum dots (Si QDs) embedded in silicon nitride (SiNx) has been controlled by varying the total pressure in the plasma-enhanced chemical vapor deposition (PECVD) reactor. This is evidenced by transmission electron microscopy and results in a shift in the light emission peak of the quantum dots. We show that the luminescence in our structures is attributed to the quantum confinement effect. These findings give a strong indication that the quality (density and size distribution) of Si QDs can be improved by optimizing the deposition parameters which opens a route to the fabrication of an all-Si tandem solar cell.

© 2010 American Institute of Physics

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KEYWORDS and PACS

PACS

  • 81.05.Cy

    Elemental semiconductors

  • 81.15.Gh

    Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.)

  • 52.77.Dq

    Plasma-based ion implantation and deposition

  • 68.55.A-

    Nucleation and growth

  • 78.66.Db

    Elemental semiconductors and insulators

  • 78.55.Ap

    Elemental semiconductors

ARTICLE DATA

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

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