This was carried out for constant temperature, axial length, and volume of the quantum dots and then for constant axial length and volume of the quantum dots but at different temperatures. ![]() The calculation of the photoionization cross-section has been carried out for a dielectric constant and two different spatial dielectric functions. We have assumed an infinite barrier potential that confines the donor impurity within the quantum dots. ![]() We have carried out a comparative theoretical study of the effects of Thomas–Fermi and Hermanson’s spatial dielectric functions and temperature gradients on the photoionization cross-section of a donor impurity in GaAs quantum dots of cylindrical and of rectangular cross-sections.
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