Infinite and finite potential energy well First consider an infinite one-dimensional PE well of
width 1 nm. Calculate the energies of the first three levels. Consider a finite PE well with the same
width (1 nm). The height of the barrier is 2.0 eV. There are only three energy levels E1
= 0.23 eV,
E2
= 0.89 eV, and E3
= 1.81 eV. Are the finite PE well levels higher or lower than the correspond-
ing infinite well levels? Find the electron penetration depth into the barrier for each of the three energy
levels. What is your conclusion?
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