e x a tendency to two-dimensional behavior), then saturates, and finally drops to the value of the acceptor binding energy of the bulk barrier. Finally, it should be noted that the relative increase in binding is smaller for acceptors than for donors. This is because the bulk acceptor Bohr radius is much smaller than that of the bulk donor.

The function fi will contain a parameter or a set of parameters that allows us to minimize the ground state energy by imposing that deo dai

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