Investigations on phonon-assisted relaxation mechanisms in CdSe/ZnSe quantum islands using time-resolved near-field spectroscopy

Y. Kanemitsu; M. Ando; K. Matsuda; T. Saiki; C. W. White

doi:10.1002/1521-396X(200204)190:2<533::AID-PSSA533>3.0.CO;2-S

Investigations on phonon-assisted relaxation mechanisms in CdSe/ZnSe quantum islands using time-resolved near-field spectroscopy

Y. Kanemitsu, M. Ando, K. Matsuda, T. Saiki, C. W. White

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

3 Citations (Scopus)

Abstract

We report on relaxation studies of excitons in quantum islands using time-resolved near-field photoluminescence (n-TRPL). This new method allow us to follow the temporal evolution of an ensemble of localized states with a spatial resolution of about 200 nm. The temporal and spectral resolutions are 5 ps and 1.7 meV, respectively. We study the relaxation mechanisms of excitons in two samples containing CdSe/ZnSe quantum islands. In the first sample, where the excitons are weaker localized, the sharp lines of the n-TRPL are repeated at a constant distance of 25 meV. This is not the case in the second sample, where the excitons are stronger localized. We discuss the origin of this correlation, comparing the dynamics of the lines.

Original language	English
Pages (from-to)	533-536
Number of pages	4
Journal	Physica Status Solidi (A) Applied Research
Volume	190
Issue number	2
DOIs	https://doi.org/10.1002/1521-396X(200204)190:2<533::AID-PSSA533>3.0.CO;2-S
Publication status	Published - 2002 Apr
Externally published	Yes
Event	7th International Conference on Optics and Excitons in Confined Systems - Montpellier, France Duration: 2001 Sept 3 → 2001 Sept 7

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1002/1521-396X(200204)190:2<533::AID-PSSA533>3.0.CO;2-S

Cite this

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title = "Investigations on phonon-assisted relaxation mechanisms in CdSe/ZnSe quantum islands using time-resolved near-field spectroscopy",

abstract = "We report on relaxation studies of excitons in quantum islands using time-resolved near-field photoluminescence (n-TRPL). This new method allow us to follow the temporal evolution of an ensemble of localized states with a spatial resolution of about 200 nm. The temporal and spectral resolutions are 5 ps and 1.7 meV, respectively. We study the relaxation mechanisms of excitons in two samples containing CdSe/ZnSe quantum islands. In the first sample, where the excitons are weaker localized, the sharp lines of the n-TRPL are repeated at a constant distance of 25 meV. This is not the case in the second sample, where the excitons are stronger localized. We discuss the origin of this correlation, comparing the dynamics of the lines.",

author = "Y. Kanemitsu and M. Ando and K. Matsuda and T. Saiki and White, {C. W.}",

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T1 - Investigations on phonon-assisted relaxation mechanisms in CdSe/ZnSe quantum islands using time-resolved near-field spectroscopy

AU - Kanemitsu, Y.

AU - Ando, M.

AU - Matsuda, K.

AU - Saiki, T.

AU - White, C. W.

PY - 2002/4

Y1 - 2002/4

N2 - We report on relaxation studies of excitons in quantum islands using time-resolved near-field photoluminescence (n-TRPL). This new method allow us to follow the temporal evolution of an ensemble of localized states with a spatial resolution of about 200 nm. The temporal and spectral resolutions are 5 ps and 1.7 meV, respectively. We study the relaxation mechanisms of excitons in two samples containing CdSe/ZnSe quantum islands. In the first sample, where the excitons are weaker localized, the sharp lines of the n-TRPL are repeated at a constant distance of 25 meV. This is not the case in the second sample, where the excitons are stronger localized. We discuss the origin of this correlation, comparing the dynamics of the lines.

AB - We report on relaxation studies of excitons in quantum islands using time-resolved near-field photoluminescence (n-TRPL). This new method allow us to follow the temporal evolution of an ensemble of localized states with a spatial resolution of about 200 nm. The temporal and spectral resolutions are 5 ps and 1.7 meV, respectively. We study the relaxation mechanisms of excitons in two samples containing CdSe/ZnSe quantum islands. In the first sample, where the excitons are weaker localized, the sharp lines of the n-TRPL are repeated at a constant distance of 25 meV. This is not the case in the second sample, where the excitons are stronger localized. We discuss the origin of this correlation, comparing the dynamics of the lines.

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M3 - Conference article

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JO - Physica Status Solidi (A) Applied Research

JF - Physica Status Solidi (A) Applied Research

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T2 - 7th International Conference on Optics and Excitons in Confined Systems

Y2 - 3 September 2001 through 7 September 2001

ER -

Investigations on phonon-assisted relaxation mechanisms in CdSe/ZnSe quantum islands using time-resolved near-field spectroscopy

Abstract

ASJC Scopus subject areas

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