Time-resolved photoluminescence in CdSe/CdZnSe and CdSe/CdMnSe coupled quantum dot structures

Eunsoon Oh; D. G. Choi; Shin Kim; T. K. Lee; J. H. Park; S. Lee; J. K. Furdyna

Time-resolved photoluminescence in CdSe/CdZnSe and CdSe/CdMnSe coupled quantum dot structures

Eunsoon Oh, D. G. Choi, Shin Kim, T. K. Lee, J. H. Park, S. Lee, J. K. Furdyna

Department of Physics

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

3 Citations (Scopus)

Abstract

We studied the time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnSe and CdSe/CdMnSe) and the PL decay as functions of the magnetic field and the temperature. In the CdSe/CdMnSe system, the PL decay of the σ ⁺ component exhibited biexponential behavior under external fields, which indicated that a fraction of the CdSe QDs were not coupled to the CdMnSe QDs. The PL lifetimes of these structures were found to be more significantly affected by non-radiative recombination, rather than by the vertical coupling between the QDs.

Original language	English
Pages (from-to)	614-618
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	49
Issue number	2
Publication status	Published - 2006 Aug

Keywords

Magnetic semiconductors
Quantum dot
Spin
Time-resolved photoluminescence

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

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title = "Time-resolved photoluminescence in CdSe/CdZnSe and CdSe/CdMnSe coupled quantum dot structures",

abstract = "We studied the time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnSe and CdSe/CdMnSe) and the PL decay as functions of the magnetic field and the temperature. In the CdSe/CdMnSe system, the PL decay of the σ + component exhibited biexponential behavior under external fields, which indicated that a fraction of the CdSe QDs were not coupled to the CdMnSe QDs. The PL lifetimes of these structures were found to be more significantly affected by non-radiative recombination, rather than by the vertical coupling between the QDs.",

keywords = "Magnetic semiconductors, Quantum dot, Spin, Time-resolved photoluminescence",

author = "Eunsoon Oh and Choi, {D. G.} and Shin Kim and Lee, {T. K.} and Park, {J. H.} and S. Lee and Furdyna, {J. K.}",

year = "2006",

month = aug,

language = "English",

volume = "49",

pages = "614--618",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

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TY - JOUR

T1 - Time-resolved photoluminescence in CdSe/CdZnSe and CdSe/CdMnSe coupled quantum dot structures

AU - Oh, Eunsoon

AU - Choi, D. G.

AU - Kim, Shin

AU - Lee, T. K.

AU - Park, J. H.

AU - Lee, S.

AU - Furdyna, J. K.

PY - 2006/8

Y1 - 2006/8

N2 - We studied the time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnSe and CdSe/CdMnSe) and the PL decay as functions of the magnetic field and the temperature. In the CdSe/CdMnSe system, the PL decay of the σ + component exhibited biexponential behavior under external fields, which indicated that a fraction of the CdSe QDs were not coupled to the CdMnSe QDs. The PL lifetimes of these structures were found to be more significantly affected by non-radiative recombination, rather than by the vertical coupling between the QDs.

AB - We studied the time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnSe and CdSe/CdMnSe) and the PL decay as functions of the magnetic field and the temperature. In the CdSe/CdMnSe system, the PL decay of the σ + component exhibited biexponential behavior under external fields, which indicated that a fraction of the CdSe QDs were not coupled to the CdMnSe QDs. The PL lifetimes of these structures were found to be more significantly affected by non-radiative recombination, rather than by the vertical coupling between the QDs.

KW - Magnetic semiconductors

KW - Quantum dot

KW - Spin

KW - Time-resolved photoluminescence

UR - http://www.scopus.com/inward/record.url?scp=33748034701&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:33748034701

SN - 0374-4884

VL - 49

SP - 614

EP - 618

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 2

ER -

Time-resolved photoluminescence in CdSe/CdZnSe and CdSe/CdMnSe coupled quantum dot structures

Abstract

Keywords

ASJC Scopus subject areas

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