Abstract
The pseudopotential method is used to calculate the energy band structures of four\(A^I B^{III} C_2^{VI} \)-type semiconductors including the effect of the displacement of anions from face-centered sites in the sublattices. It was established that CuAlSe2, CuInS2, and CuInSe2 are direct gap semiconductors and that CuAlS2 has a “pseudodirect” energy gap. Experimental data derived from studies of the optical properties of these crystals in the U V region are also discussed.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 6, pp. 7–12, June, 1976.
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Poplavnoi, A.S., Polygalov, Y.I. & Ratner, A.M. Energy band structures of the chalcopyrite lattice semiconductors CuAlS2, CuAlSe2, CuInS2, and CuInSe2 . Soviet Physics Journal 19, 689–692 (1976). https://doi.org/10.1007/BF00943460
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DOI: https://doi.org/10.1007/BF00943460