Infrared transient absorption and excited-states of excitons and biexcitons confined in CuCl quantum dots

K. Miyajima; K. Edamatsu; T. Itoh

doi:10.1016/j.jlumin.2004.01.078

Infrared transient absorption and excited-states of excitons and biexcitons confined in CuCl quantum dots

K. Miyajima, K. Edamatsu, T. Itoh

RIEC - Information Communication Platforms Division

Osaka University

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

16 Citations (Scopus)

Abstract

Mid-infrared picosecond transient absorption has revealed a new aspect of the excited states of confined biexcitons in CuCl quantum dots embedded in a NaCl matrix. The transient absorption exhibits two-decay components that originate from confined excitons and biexcitons. The attribution of the fast-decay component to the confined biexcitons has been confirmed by measurement by a two-photon resonant excitation process. The transient-absorption spectrum of biexcitons indicates the existence of a stable biexciton excited state in the quantum dots, in contrast to the unstable excited state in the bulk crystal.

Original language	English
Pages (from-to)	371-374
Number of pages	4
Journal	Journal of Luminescence
Volume	108
Issue number	1-4
DOIs	https://doi.org/10.1016/j.jlumin.2004.01.078
Publication status	Published - 2004 Jun
Event	Proceedings of the Fourtheenth International Conference - Christchurch, New Zealand Duration: 2003 Aug 3 → 2003 Aug 8

Keywords

Biexciton
CuCl;Quantum dot
Transient absorption

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10.1016/j.jlumin.2004.01.078

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@article{95a2cc7ff0fa493893b994af03577173,

title = "Infrared transient absorption and excited-states of excitons and biexcitons confined in CuCl quantum dots",

abstract = "Mid-infrared picosecond transient absorption has revealed a new aspect of the excited states of confined biexcitons in CuCl quantum dots embedded in a NaCl matrix. The transient absorption exhibits two-decay components that originate from confined excitons and biexcitons. The attribution of the fast-decay component to the confined biexcitons has been confirmed by measurement by a two-photon resonant excitation process. The transient-absorption spectrum of biexcitons indicates the existence of a stable biexciton excited state in the quantum dots, in contrast to the unstable excited state in the bulk crystal.",

keywords = "Biexciton, CuCl;Quantum dot, Transient absorption",

author = "K. Miyajima and K. Edamatsu and T. Itoh",

note = "Funding Information: This work was supported by CREST (Core Research for Evolutional Science and Technology) of JST (Japan Science and Technology Corporation).; Proceedings of the Fourtheenth International Conference ; Conference date: 03-08-2003 Through 08-08-2003",

year = "2004",

month = jun,

doi = "10.1016/j.jlumin.2004.01.078",

language = "English",

volume = "108",

pages = "371--374",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - Infrared transient absorption and excited-states of excitons and biexcitons confined in CuCl quantum dots

AU - Miyajima, K.

AU - Edamatsu, K.

AU - Itoh, T.

N1 - Funding Information: This work was supported by CREST (Core Research for Evolutional Science and Technology) of JST (Japan Science and Technology Corporation).

PY - 2004/6

Y1 - 2004/6

N2 - Mid-infrared picosecond transient absorption has revealed a new aspect of the excited states of confined biexcitons in CuCl quantum dots embedded in a NaCl matrix. The transient absorption exhibits two-decay components that originate from confined excitons and biexcitons. The attribution of the fast-decay component to the confined biexcitons has been confirmed by measurement by a two-photon resonant excitation process. The transient-absorption spectrum of biexcitons indicates the existence of a stable biexciton excited state in the quantum dots, in contrast to the unstable excited state in the bulk crystal.

AB - Mid-infrared picosecond transient absorption has revealed a new aspect of the excited states of confined biexcitons in CuCl quantum dots embedded in a NaCl matrix. The transient absorption exhibits two-decay components that originate from confined excitons and biexcitons. The attribution of the fast-decay component to the confined biexcitons has been confirmed by measurement by a two-photon resonant excitation process. The transient-absorption spectrum of biexcitons indicates the existence of a stable biexciton excited state in the quantum dots, in contrast to the unstable excited state in the bulk crystal.

KW - Biexciton

KW - CuCl;Quantum dot

KW - Transient absorption

UR - http://www.scopus.com/inward/record.url?scp=2342516140&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2342516140&partnerID=8YFLogxK

U2 - 10.1016/j.jlumin.2004.01.078

DO - 10.1016/j.jlumin.2004.01.078

M3 - Conference article

AN - SCOPUS:2342516140

SN - 0022-2313

VL - 108

SP - 371

EP - 374

JO - Journal of Luminescence

JF - Journal of Luminescence

IS - 1-4

T2 - Proceedings of the Fourtheenth International Conference

Y2 - 3 August 2003 through 8 August 2003

ER -

Infrared transient absorption and excited-states of excitons and biexcitons confined in CuCl quantum dots

Abstract

Keywords

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