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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Citation Formats

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.