Dephasing and interaction of excitons CdSe/ZnSe islands

H. P. Wagner; H.-P. Tranitz; H. Preis; Wolfgang Langbein; Jørn Märcher Hvam

Dephasing and interaction of excitons CdSe/ZnSe islands

H. P. Wagner
, H.-P. Tranitz
, H. Preis
, Wolfgang Langbein
, Jørn Märcher Hvam

Chemnitz University of Technology
Universität Regensburg
TU Dortmund University

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The dephasing of excitons in self-organized CdSe/ZnSe islands grown by molecular-beam epitaxy is investigated using spectrally resolved four-wave mixing. A distribution of dephasing times is observed, indicating the existence of localized excitons with different relaxation times at comparable transition energies. Polarization-dependent measurements identify the formation of biexcitons. The observed large biexciton binding energy of 22meV increases with decreasing exciton energy, which is attributed to an increasing three-dimensional confinement.

Original language	English
Journal	Journal of Crystal Growth
Volume	214-215
Pages (from-to)	747-751
ISSN	0022-0248
Publication status	Published - 2000

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@article{336c320ac2914cf2b9efce348aea01da,

title = "Dephasing and interaction of excitons CdSe/ZnSe islands",

abstract = "The dephasing of excitons in self-organized CdSe/ZnSe islands grown by molecular-beam epitaxy is investigated using spectrally resolved four-wave mixing. A distribution of dephasing times is observed, indicating the existence of localized excitons with different relaxation times at comparable transition energies. Polarization-dependent measurements identify the formation of biexcitons. The observed large biexciton binding energy of 22meV increases with decreasing exciton energy, which is attributed to an increasing three-dimensional confinement.",

author = "Wagner, \{H. P.\} and H.-P. Tranitz and H. Preis and Wolfgang Langbein and Hvam, \{J{\o}rn M{\"a}rcher\}",

year = "2000",

language = "English",

volume = "214-215",

pages = "747--751",

journal = "Journal of Crystal Growth",

issn = "0022-0248",

publisher = "Elsevier",

}

TY - JOUR

T1 - Dephasing and interaction of excitons CdSe/ZnSe islands

AU - Wagner, H. P.

AU - Tranitz, H.-P.

AU - Preis, H.

AU - Langbein, Wolfgang

AU - Hvam, Jørn Märcher

PY - 2000

Y1 - 2000

N2 - The dephasing of excitons in self-organized CdSe/ZnSe islands grown by molecular-beam epitaxy is investigated using spectrally resolved four-wave mixing. A distribution of dephasing times is observed, indicating the existence of localized excitons with different relaxation times at comparable transition energies. Polarization-dependent measurements identify the formation of biexcitons. The observed large biexciton binding energy of 22meV increases with decreasing exciton energy, which is attributed to an increasing three-dimensional confinement.

AB - The dephasing of excitons in self-organized CdSe/ZnSe islands grown by molecular-beam epitaxy is investigated using spectrally resolved four-wave mixing. A distribution of dephasing times is observed, indicating the existence of localized excitons with different relaxation times at comparable transition energies. Polarization-dependent measurements identify the formation of biexcitons. The observed large biexciton binding energy of 22meV increases with decreasing exciton energy, which is attributed to an increasing three-dimensional confinement.

M3 - Journal article

SN - 0022-0248

VL - 214-215

SP - 747

EP - 751

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

ER -