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Numerical Calculation of the Ionization Energy of Donors in a Cubic Quantum well and Wire

Authors: Iraj Kazeminezhad, Sara Sedaghat, Mahmood Barati


The ionization energy in semiconductor systems in nano scale was investigated by using effective mass approximation. By introducing the Hamiltonian of the system, the variational technique was employed to calculate the ground state and the ionization energy of a donor at the center and in the case that the impurities are randomly distributed inside a cubic quantum well. The numerical results for GaAs/GaAlAs show that the ionization energy strongly depends on the well width for both cases and it decreases as the well width increases. The ionization energy of a quantum wire was also calculated and compared with the results for the well.

Keywords: Quantum Dot, Quantum well, quantum wire, impuritystate

Digital Object Identifier (DOI):

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