| Summary: | 碩士 === 國立交通大學 === 電子物理學系 === 82 === In this thesis we study the change of electronic binding energy
of hydrogenic impurity in the QD(quantum dot) with infinite
potential boundary barrier. We take three different cases to
survey the tendency of change of binding energy:(i) The QD is
lengthened or shortened (ii) the position of impurity deviates
from the center of the QD (iii) the volume of the QD is kept
constant but the shape of the QD can be gradually chang. The
calculational method used in this thesis is based on the theory
proposed by Gorecki and Byers Brown in 1989. We improve the
contour function so that we get better results. Besides, with
our improvement, we can deal prolate QDs problems. No matter
where the impurity is, the numerical results show that the
binding energy converge quickly. If we fix the volumes of QDs,
and lengthen or shorten them, we find that the binding energies
change slowly. It reveals that the binding energy and the
volume of the QD are closely correlated.
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