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Light absorption by colloidal semiconductor quantum dots

Zeger Hens UGent and Iwan Moreels UGent (2012) JOURNAL OF MATERIALS CHEMISTRY. 22(21). p.10406-10415
abstract
We review the recent progress in the quantitative understanding of light absorption by colloidal semiconductor quantum dots within the framework of the Maxwell-Garnett (MG) effective medium theory. The fundamental quantities used to describe light absorption by dispersed absorbers-intrinsic absorption coefficient, molar absorption coefficient and absorption cross section-are introduced and it is shown that the MG model reduces to a local field correction in the case of strongly diluted dispersions. The correspondence between experimental results and this so-called local field approximation is first demonstrated using PbSe and PbS quantum dots as model systems and then extended to other materials. Moreover, it is shown that by adapting the local field corrections, the analysis can be extended to quantum rods and core/shell heterostructures. Finally, recent applications of these results are discussed and future research directions are indicated.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
OPTICAL-PROPERTIES, CROSS-SECTION, EXTINCTION COEFFICIENT, CDS NANOCRYSTALS, SIZE, CDTE, PBSE, PHOTOLUMINESCENCE, ENHANCEMENT, NANOWIRES
journal title
JOURNAL OF MATERIALS CHEMISTRY
J. Mater. Chem.
volume
22
issue
21
pages
10406 - 10415
Web of Science type
Article
Web of Science id
000303816200002
ISSN
0959-9428
DOI
10.1039/c2jm30760j
project
Center for nano- and biophotonics (NB-Photonics)
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2979501
handle
http://hdl.handle.net/1854/LU-2979501
date created
2012-09-05 17:38:38
date last changed
2014-05-26 09:47:04
@article{2979501,
  abstract     = {We review the recent progress in the quantitative understanding of light absorption by colloidal semiconductor quantum dots within the framework of the Maxwell-Garnett (MG) effective medium theory. The fundamental quantities used to describe light absorption by dispersed absorbers-intrinsic absorption coefficient, molar absorption coefficient and absorption cross section-are introduced and it is shown that the MG model reduces to a local field correction in the case of strongly diluted dispersions. The correspondence between experimental results and this so-called local field approximation is first demonstrated using PbSe and PbS quantum dots as model systems and then extended to other materials. Moreover, it is shown that by adapting the local field corrections, the analysis can be extended to quantum rods and core/shell heterostructures. Finally, recent applications of these results are discussed and future research directions are indicated.},
  author       = {Hens, Zeger and Moreels, Iwan},
  issn         = {0959-9428},
  journal      = {JOURNAL OF MATERIALS CHEMISTRY},
  keyword      = {OPTICAL-PROPERTIES,CROSS-SECTION,EXTINCTION COEFFICIENT,CDS NANOCRYSTALS,SIZE,CDTE,PBSE,PHOTOLUMINESCENCE,ENHANCEMENT,NANOWIRES},
  language     = {eng},
  number       = {21},
  pages        = {10406--10415},
  title        = {Light absorption by colloidal semiconductor quantum dots},
  url          = {http://dx.doi.org/10.1039/c2jm30760j},
  volume       = {22},
  year         = {2012},
}

Chicago
Hens, Zeger, and Iwan Moreels. 2012. “Light Absorption by Colloidal Semiconductor Quantum Dots.” Journal of Materials Chemistry 22 (21): 10406–10415.
APA
Hens, Z., & Moreels, I. (2012). Light absorption by colloidal semiconductor quantum dots. JOURNAL OF MATERIALS CHEMISTRY, 22(21), 10406–10415.
Vancouver
1.
Hens Z, Moreels I. Light absorption by colloidal semiconductor quantum dots. JOURNAL OF MATERIALS CHEMISTRY. 2012;22(21):10406–15.
MLA
Hens, Zeger, and Iwan Moreels. “Light Absorption by Colloidal Semiconductor Quantum Dots.” JOURNAL OF MATERIALS CHEMISTRY 22.21 (2012): 10406–10415. Print.