where jl and hl are the lth-order spherical Bessel function and Hankel functions of the first kind, respectively. Then, the same results are obtained if the wavefunctions and quantum levels are calculated with use of the Bessel and Hankel functions. Once en(l, w = 1) and en(l, w = 0) are obtained, the binding energy of the corresponding donor states in the spherical quantum dot is given by

Table 3. Quantum levels of an electron in a SQD of GaAs-Ga1_I Al^As.
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