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Home  >  Volume 26 (March 2014)

24. The Effect of Hydrostatic Pressure, Temperature and Impurity Position on the Binding Energy of a Hydrogenic Donor Impurity in a Quantum Dot by OYENIYI Ezekiel and POPOOLA Oyebola. Volume26, (March, 2014), pp167 – 176.
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Abstract

The effect of hydrostatic pressure, temperature, impurity position and radius of quantum dots on the binding energy of hydrogenic impurity was calculated using the variational method within the effective mass approximation. A spherical GaAs quantum dot surrounded by AlGaAs (with an infinite potential barrier) was considered. The results obtained show that; (a). Binding energy of the hydrogenic donor impurity increases with increase hydrostatic pressure and it is pronounced for narrower radii. (b) Binding energy of the hydrogenic donor impurity decreases with increase in temperature and this change is significant some particular change in temperature. (c) Binding energy of the hydrogenic donor impurity decreases with increase in impurity position. (d) Binding energy of the hydrogenic donor impurity decreases with increase in radius of the quantum dot.

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