Influence of resonant excitation and carrier lifetime on the optical properties of coupled CdSe quantum dots

Eunsoon Oh; Dong Gi Choi; Jung Hyun Park; Tae Kyu Lee; Sanghoon Lee; J. K. Furdyna

doi:10.3938/jkps.53.106

Influence of resonant excitation and carrier lifetime on the optical properties of coupled CdSe quantum dots

Eunsoon Oh^*
, Dong Gi Choi
, Jung Hyun Park
, Tae Kyu Lee
, Sanghoon Lee
, J. K. Furdyna

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We studied the time-integrated and time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnMnSe and CdSe/CdMnSe), which exhibited an antiferromagnetic interaction between the QDs in adjacent layers. We observed a peculiar PL peak shift with an excitation wavelength close to the bandgap of the CdSe QDs, which was attributed to a resonant excitation condition. We found that the PL lifetimes of these structures were significantly influenced by non-radiative recombination processes and that the temperature dependence of the PL intensity was strongly correlated with the PL lifetime.

Original language	English
Pages (from-to)	106-109
Number of pages	4
Journal	Journal of the Korean Physical Society
Volume	53
Issue number	1
DOIs	https://doi.org/10.3938/jkps.53.106
Publication status	Published - 2008 Jul

Keywords

Carrier lifetime
CdSe quantum dot
Optical properties
Resonance

ASJC Scopus subject areas

General Physics and Astronomy

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10.3938/jkps.53.106

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title = "Influence of resonant excitation and carrier lifetime on the optical properties of coupled CdSe quantum dots",

abstract = "We studied the time-integrated and time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnMnSe and CdSe/CdMnSe), which exhibited an antiferromagnetic interaction between the QDs in adjacent layers. We observed a peculiar PL peak shift with an excitation wavelength close to the bandgap of the CdSe QDs, which was attributed to a resonant excitation condition. We found that the PL lifetimes of these structures were significantly influenced by non-radiative recombination processes and that the temperature dependence of the PL intensity was strongly correlated with the PL lifetime.",

keywords = "Carrier lifetime, CdSe quantum dot, Optical properties, Resonance",

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T1 - Influence of resonant excitation and carrier lifetime on the optical properties of coupled CdSe quantum dots

AU - Oh, Eunsoon

AU - Choi, Dong Gi

AU - Park, Jung Hyun

AU - Lee, Tae Kyu

AU - Lee, Sanghoon

AU - Furdyna, J. K.

PY - 2008/7

Y1 - 2008/7

N2 - We studied the time-integrated and time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnMnSe and CdSe/CdMnSe), which exhibited an antiferromagnetic interaction between the QDs in adjacent layers. We observed a peculiar PL peak shift with an excitation wavelength close to the bandgap of the CdSe QDs, which was attributed to a resonant excitation condition. We found that the PL lifetimes of these structures were significantly influenced by non-radiative recombination processes and that the temperature dependence of the PL intensity was strongly correlated with the PL lifetime.

AB - We studied the time-integrated and time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnMnSe and CdSe/CdMnSe), which exhibited an antiferromagnetic interaction between the QDs in adjacent layers. We observed a peculiar PL peak shift with an excitation wavelength close to the bandgap of the CdSe QDs, which was attributed to a resonant excitation condition. We found that the PL lifetimes of these structures were significantly influenced by non-radiative recombination processes and that the temperature dependence of the PL intensity was strongly correlated with the PL lifetime.

KW - Carrier lifetime

KW - CdSe quantum dot

KW - Optical properties

KW - Resonance

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DO - 10.3938/jkps.53.106

M3 - Article

AN - SCOPUS:49649087255

SN - 0374-4884

VL - 53

SP - 106

EP - 109

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 1

ER -

Influence of resonant excitation and carrier lifetime on the optical properties of coupled CdSe quantum dots

Abstract

Keywords

ASJC Scopus subject areas

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