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Yuli Cha Tarido
Quantum Semiconductor and Device Lab., Department of Physics, Institut Teknologi Bandung
Astronomy Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering

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Simulation of Surface Potential Distribution Induced by Electronic Carrier Injection into Single Silicon Quantum Dot Yudi Darma; Rizal Kurniadi; M. Hamzah Fauzi; Yuli Cha Tarido
Indonesian Journal of Physics Vol 17 No 4 (2006): Vol. 17 No. 4, October 2006
Publisher : Institut Teknologi Bandung

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Abstract

In this paper we propose a numerical simulation method of the surface potential distribution based on the solution of two-dimensional Poisson equation in rectangular coordinates with boundary condition. The simulation results confirm that the surface potential changes on the dot by electron injection and/or extraction, in contrast to the neutral dot in which just a flat potential image was observed. . In this work we investigated the charge states of individual quantum dot with the diameter of 10 and 20nm. Note that, if two or more electrons are injected/extracted to/from the quantum dot, the coulombic repulsion effect is observed, and more clearly for the dot with the bigger size due to the charges separation into the quantum dot.
Co-Authors M. Hamzah Fauzi Rizal Kurniadi Yudi Darma