Journal of Physical Chemistry Letters, volume 4, issue 6, pages 987-992
Dynamic Trap Formation and Elimination in Colloidal Quantum Dots
1
Department
of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road,
Toronto, Ontario, M5S 3G4, Canada
|
Publication type: Journal Article
Publication date: 2013-03-11
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 5.7
ISSN: 19487185, 19487185
Physical and Theoretical Chemistry
General Materials Science
Abstract
Using first-principles simulations on PbS and CdSe colloidal quantum dots, we find that surface defects form in response to electronic doping and charging of the nanoparticles. We show that electronic trap states in nanocrystals are dynamic entities, in contrast with the conventional picture wherein traps are viewed as stable electronic states that can be filled or emptied, but not created or destroyed. These traps arise from the formation or breaking of atomic dimers at the nanoparticle surface. The dimers' energy levels can reside within the bandgap, in which case a trap is formed. Fortunately, we are also able to identify a number of shallow-electron-affinity cations that stabilize the surface, working to counter dynamic trap formation and allowing for trap-free doping.
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Citations by publishers
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10
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70
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American Chemical Society (ACS)
69 publications, 58.47%
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Wiley
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1 publication, 0.85%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 0.85%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Voznyy O. et al. Dynamic Trap Formation and Elimination in Colloidal Quantum Dots // Journal of Physical Chemistry Letters. 2013. Vol. 4. No. 6. pp. 987-992.
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Voznyy O., Thon S. M., Ip A., Sargent E. H. Dynamic Trap Formation and Elimination in Colloidal Quantum Dots // Journal of Physical Chemistry Letters. 2013. Vol. 4. No. 6. pp. 987-992.
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TY - JOUR
DO - 10.1021/jz400125r
UR - https://doi.org/10.1021/jz400125r
TI - Dynamic Trap Formation and Elimination in Colloidal Quantum Dots
T2 - Journal of Physical Chemistry Letters
AU - Voznyy, Oleksandr
AU - Thon, Susanna Mitrani
AU - Ip, Alex
AU - Sargent, Edward H
PY - 2013
DA - 2013/03/11 00:00:00
PB - American Chemical Society (ACS)
SP - 987-992
IS - 6
VL - 4
SN - 1948-7185
SN - 1948-7185
ER -
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@article{2013_Voznyy,
author = {Oleksandr Voznyy and Susanna Mitrani Thon and Alex Ip and Edward H Sargent},
title = {Dynamic Trap Formation and Elimination in Colloidal Quantum Dots},
journal = {Journal of Physical Chemistry Letters},
year = {2013},
volume = {4},
publisher = {American Chemical Society (ACS)},
month = {mar},
url = {https://doi.org/10.1021/jz400125r},
number = {6},
pages = {987--992},
doi = {10.1021/jz400125r}
}
Cite this
MLA
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Voznyy, Oleksandr, et al. “Dynamic Trap Formation and Elimination in Colloidal Quantum Dots.” Journal of Physical Chemistry Letters, vol. 4, no. 6, Mar. 2013, pp. 987-992. https://doi.org/10.1021/jz400125r.