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Biexcitons formed from spatially separated electrons and holes in quasi-zero-dimensional semiconductor nanosystems

  • Semiconductor Structures, Low-Dimensional Systems, and Quantum Phenomena
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A theory of biexcitons (formed from spatially separated electron and holes) in nanosystems that consist of zinc-selenide quantum dots synthesized in borosilicate glassy matrices is developed. The dependences of the total energy and the binding energy of the singlet ground biexciton state in such a system on the spacing between the quantum-dot surfaces and the quantum-dot radius are derived by the variational method. It is shown that biexciton formation is of the threshold character and possible in nanosystems, in which the spacing between the quantum-dot surfaces is larger than a certain critical spacing.

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Correspondence to S. I. Pokutnyi.

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Original Russian Text © S.I. Pokutnyi, 2013, published in Fizika i Tekhnika Poluprovodnikov, 2013, Vol. 47, No. 12, pp. 1653–1661.

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Pokutnyi, S.I. Biexcitons formed from spatially separated electrons and holes in quasi-zero-dimensional semiconductor nanosystems. Semiconductors 47, 1626–1635 (2013).

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