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Assume a superlattice consisting of 50Å GaAs quantum wells and 40Å Al0.3Ga0.7As barriers. The conduction band

offset, V0, between well and barrier is 0.236 eV and the effective mass, m, throughout is 0.0665m0. Using the tight-binding approximation of the Kronig-Penney model, plot out the energy function in terms of α. Denote the size of the first three allowed bands, in energy. What is the resulting photon wavelength for a transition from the center of the first allowed band to the center of the next allowed band? Please create plot using your preferred plotting software and attach the code. 

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