Optical properties of single CdS nanosheets

Heesuk Rho; Kyoung Yeon Lee; Thang B. Hoang; Lyubov V. Titova; Ashu Mishra; Leigh M. Smith; Howard E. Jackson; Jan M. Yarrison-Rice; Young Jin Choi; Kyoung Jin Choi; Jae Gwan Park

doi:10.3938/jkps.53.3073

Optical properties of single CdS nanosheets

Heesuk Rho^*
, Kyoung Yeon Lee
, Thang B. Hoang
, Lyubov V. Titova
, Ashu Mishra
, Leigh M. Smith
, Howard E. Jackson
, Jan M. Yarrison-Rice
, Young Jin Choi
, Kyoung Jin Choi
, Jae Gwan Park

^*Corresponding author for this work

Department of Physics

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

1 Scopus citations

Abstract

We study the optical properties of single CdS nanosheets using micro-photoluminescence and time-resolved photoluminescence (PL) techniques. At low temperature, we observe high quantum efficiency and strongly polarized PL emission, indicating high-quality single-crystal nanosheet growth. Photoluminescence from A and B exciton states is observed with different spatial distributions, suggesting the existence of a variation in strain in the nanosheets. Time-resolved photoluminescence measurements show the exciton lifetime to be ∼230 ps, longer than that of the near-band-edge emission, but shorter than the lifetime of defect-related emission in single CdS nanowires.

Original language	English
Pages (from-to)	3073-3076
Number of pages	4
Journal	Journal of the Korean Physical Society
Volume	53
Issue number	5 PART 2
DOIs	https://doi.org/10.3938/jkps.53.3073
State	Published - 2008.11

Keywords

Micro-photoluminescence
Nanosheet
Time-resolved spectroscopy

Quacquarelli Symonds(QS) Subject Topics

Physics & Astronomy

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10.3938/jkps.53.3073

Cite this

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title = "Optical properties of single CdS nanosheets",

abstract = "We study the optical properties of single CdS nanosheets using micro-photoluminescence and time-resolved photoluminescence (PL) techniques. At low temperature, we observe high quantum efficiency and strongly polarized PL emission, indicating high-quality single-crystal nanosheet growth. Photoluminescence from A and B exciton states is observed with different spatial distributions, suggesting the existence of a variation in strain in the nanosheets. Time-resolved photoluminescence measurements show the exciton lifetime to be ∼230 ps, longer than that of the near-band-edge emission, but shorter than the lifetime of defect-related emission in single CdS nanowires.",

keywords = "Micro-photoluminescence, Nanosheet, Time-resolved spectroscopy",

author = "Heesuk Rho and Lee, \{Kyoung Yeon\} and Hoang, \{Thang B.\} and Titova, \{Lyubov V.\} and Ashu Mishra and Smith, \{Leigh M.\} and Jackson, \{Howard E.\} and Yarrison-Rice, \{Jan M.\} and Choi, \{Young Jin\} and Choi, \{Kyoung Jin\} and Park, \{Jae Gwan\}",

year = "2008",

month = nov,

doi = "10.3938/jkps.53.3073",

language = "English",

volume = "53",

pages = "3073--3076",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

number = "5 PART 2",

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TY - JOUR

T1 - Optical properties of single CdS nanosheets

AU - Rho, Heesuk

AU - Lee, Kyoung Yeon

AU - Hoang, Thang B.

AU - Titova, Lyubov V.

AU - Mishra, Ashu

AU - Smith, Leigh M.

AU - Jackson, Howard E.

AU - Yarrison-Rice, Jan M.

AU - Choi, Young Jin

AU - Choi, Kyoung Jin

AU - Park, Jae Gwan

PY - 2008/11

Y1 - 2008/11

N2 - We study the optical properties of single CdS nanosheets using micro-photoluminescence and time-resolved photoluminescence (PL) techniques. At low temperature, we observe high quantum efficiency and strongly polarized PL emission, indicating high-quality single-crystal nanosheet growth. Photoluminescence from A and B exciton states is observed with different spatial distributions, suggesting the existence of a variation in strain in the nanosheets. Time-resolved photoluminescence measurements show the exciton lifetime to be ∼230 ps, longer than that of the near-band-edge emission, but shorter than the lifetime of defect-related emission in single CdS nanowires.

AB - We study the optical properties of single CdS nanosheets using micro-photoluminescence and time-resolved photoluminescence (PL) techniques. At low temperature, we observe high quantum efficiency and strongly polarized PL emission, indicating high-quality single-crystal nanosheet growth. Photoluminescence from A and B exciton states is observed with different spatial distributions, suggesting the existence of a variation in strain in the nanosheets. Time-resolved photoluminescence measurements show the exciton lifetime to be ∼230 ps, longer than that of the near-band-edge emission, but shorter than the lifetime of defect-related emission in single CdS nanowires.

KW - Micro-photoluminescence

KW - Nanosheet

KW - Time-resolved spectroscopy

UR - https://www.scopus.com/pages/publications/57349109565

U2 - 10.3938/jkps.53.3073

DO - 10.3938/jkps.53.3073

M3 - Journal article

AN - SCOPUS:57349109565

SN - 0374-4884

VL - 53

SP - 3073

EP - 3076

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 5 PART 2

ER -

Optical properties of single CdS nanosheets

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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