Electronic structure of ZnO wurtzite quantum wires

J. B. Xia and X. W. Zhang ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 49, issue 4, 415-420

Abstract: The electronic structure and optical properties of ZnO wurtzite quantum wires with radius R≥3 nm are studied in the framework of six-band effective-mass envelope function theory. The hole effective-mass parameters of ZnO wurtzite material are calculated by the empirical pseudopotential method. It is found that the electron states are either two-fold or four-fold degenerate. There is a dark exciton effect when the radius R of the ZnO quantum wires is in the range of [3,19.1] nm (dark range in our model). The dark ranges of other wurtzite semiconductor quantum wires are calculated for comparison. The dark range becomes smaller when the |Δ so | is larger, which also happens in the quantum-dot systems. The linear polarization factor of ZnO quantum wires is larger when the temperature is higher. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 73.21.Hb Quantum wires; 78.67.Lt Quantum wires (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00093-1

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