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

Journal Article · Sun Dec 15 00:00:00 EST 2013 · Semiconductors

DOI:https://doi.org/10.1134/S1063782613120178· OSTI ID:22300418

Pokutnyi, S. I., E-mail: [e-mail] ^[1]

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1. National Academy of Sciences of Ukraine, Kurdyumov Institute for Metal Physics (Ukraine)

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.

• OSTI ID: 22300418
• Journal Information: Semiconductors, Vol. 47, Issue 12; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ELECTRONS
QUANTUM DOTS
SEMICONDUCTOR MATERIALS
SURFACES