Biexciton binding energy in ZnSe quantum wells and quantum wires

Hans-Peter Wagner, Wolfgang Langbein, Jørn Märcher Hvam, G. Bacher, T. Kümmell, Alfred Forchel

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The biexciton binding energy E-XX is investigated in ZnSe/ZnMgSe quantum wells and quantum wires as a function of the lateral confinement by transient four-wave mixing. In the quantum wells one observes for decreasing well width a significant increase in the relative binding energy, saturating for well widths less than 8 nm. In the quantum wires an increase of 30% is found in the smallest quantum wire structures compared to the corresponding quantum well value. A simple analytical model taking into account the quantum confinement in these low-dimensional systems is used to explain the experimentally observed dependence of the biexciton binding energies.
Original languageEnglish
JournalIPPS physica status solidi (b)
Volume231
Issue number1
Pages (from-to)11-18
ISSN0370-1972
DOIs
Publication statusPublished - 2002

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