Probing the Structure of Colloidal Core/Shell Quantum Dots Formed by Cation Exchange
Keith A. Abel
1
,
Paul A Fitzgerald
2
,
Ting-Yu Wang
3
,
Tom Z. Regier
4
,
Mati Raudsepp
5
,
S. P. Ringer
3
,
Gregory G. Warr
2
,
Yuanjian Zhang
1
Publication type: Journal Article
Publication date: 2012-02-03
scimago Q1
wos Q3
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
Cation-exchange reactions have greatly expanded the types of nanoparticle compositions and structures that can be prepared. For instance, cation-exchange reactions can be utilized for preparation of core/shell quantum dots with improved (photo)stability and photoluminescence quantum yield. Understanding the structure of these nanomaterials is imperative for explaining their observed properties and for their further development. Core/shell quantum dots formed by cation exchange are particularly challenging to characterize because shell growth does not lead to an increase in overall particle size that can easily be characterized by standard transmission electron microscopy (TEM). Here, we report on the direct observation of the PbSe/CdSe core/shell structure (formed by cation exchange) using high-angle annular dark field (HAADF) imaging and energy-filtered TEM (EF-TEM). These results are further confirmed by energy-dependent X-ray photoemission spectroscopy (XPS) data that show increasing Pb/Cd signal with ...
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Total citations:
47
Citations from 2024:
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(4.26%)
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GOST
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Abel K. A. et al. Probing the Structure of Colloidal Core/Shell Quantum Dots Formed by Cation Exchange // Journal of Physical Chemistry C. 2012. Vol. 116. No. 6. pp. 3968-3978.
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Abel K. A., Fitzgerald P. A., Wang T., Regier T. Z., Raudsepp M., Ringer S. P., Warr G. G., Zhang Y. Probing the Structure of Colloidal Core/Shell Quantum Dots Formed by Cation Exchange // Journal of Physical Chemistry C. 2012. Vol. 116. No. 6. pp. 3968-3978.
Cite this
RIS
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TY - JOUR
DO - 10.1021/jp2112928
UR - https://doi.org/10.1021/jp2112928
TI - Probing the Structure of Colloidal Core/Shell Quantum Dots Formed by Cation Exchange
T2 - Journal of Physical Chemistry C
AU - Abel, Keith A.
AU - Fitzgerald, Paul A
AU - Wang, Ting-Yu
AU - Regier, Tom Z.
AU - Raudsepp, Mati
AU - Ringer, S. P.
AU - Warr, Gregory G.
AU - Zhang, Yuanjian
PY - 2012
DA - 2012/02/03
PB - American Chemical Society (ACS)
SP - 3968-3978
IS - 6
VL - 116
SN - 1932-7447
SN - 1932-7455
ER -
Cite this
BibTex (up to 50 authors)
Copy
@article{2012_Abel,
author = {Keith A. Abel and Paul A Fitzgerald and Ting-Yu Wang and Tom Z. Regier and Mati Raudsepp and S. P. Ringer and Gregory G. Warr and Yuanjian Zhang},
title = {Probing the Structure of Colloidal Core/Shell Quantum Dots Formed by Cation Exchange},
journal = {Journal of Physical Chemistry C},
year = {2012},
volume = {116},
publisher = {American Chemical Society (ACS)},
month = {feb},
url = {https://doi.org/10.1021/jp2112928},
number = {6},
pages = {3968--3978},
doi = {10.1021/jp2112928}
}
Cite this
MLA
Copy
Abel, Keith A., et al. “Probing the Structure of Colloidal Core/Shell Quantum Dots Formed by Cation Exchange.” Journal of Physical Chemistry C, vol. 116, no. 6, Feb. 2012, pp. 3968-3978. https://doi.org/10.1021/jp2112928.