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Charge retention in quantized energy levels of nanocrystals
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Date
2007-04-01
Author
Dana, Aykutlu
Akca, Imran
Ergun, Orcun
Aydinli, Atilla
Turan, Raşit
Finstad, Terje G.
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Understanding charging mechanisms and charge retention dynamics of nanocrystal (NC) memory devices is important in optimization of device design. Capacitance spectroscopy on PECVD grown germanium NCs embedded in a silicon oxide matrix was performed. Dynamic measurements of discharge dynamics are carried out. Charge decay is modelled by assuming storage of carriers in the ground states of NCs and that the decay is dominated by direct tunnelling. Discharge rates are calculated using the theoretical model for different NC sizes and densities and are compared with experimental data. Experimental results agree well with the proposed model and suggest that charge is indeed stored in the quantized energy levels of the NCs.
Subject Keywords
Atomic and Molecular Physics, and Optics
,
Electronic, Optical and Magnetic Materials
,
Condensed Matter Physics
URI
https://hdl.handle.net/11511/38681
Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
DOI
https://doi.org/10.1016/j.physe.2006.10.002
Collections
Department of Physics, Article
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A. Dana, I. Akca, O. Ergun, A. Aydinli, R. Turan, and T. G. Finstad, “Charge retention in quantized energy levels of nanocrystals,”
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
, pp. 94–98, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38681.