Journal of Physical Chemistry C, volume 115, issue 23, pages 11400-11406
Shape and Temperature Dependence of Hot Carrier Relaxation Dynamics in Spherical and Elongated CdSe Quantum Dots
Publication type: Journal Article
Publication date: 2011-05-19
Journal:
Journal of Physical Chemistry C
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.7
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
Time-domain nonadiabatic ab initio simulations are performed to study the phonon-assisted hot electron relaxation dynamics in a CdSe spherical quantum dot (QD) and an elongated quantum dot (EQD) with the same diameter. The band gap is smaller, and the electron and hole states are denser in the EQD than in the QD. Also, the band gap shows a stronger negative temperature dependence in the EQD than in the QD. Higher frequency phonons are excited and scattered with electrons at higher temperatures for both QD and EQD. The electron―phonon coupling is generally stronger in the EQD than in the QD. The hot electron decay rates calculated from nonadiabatic molecular dynamics show a weaker temperature dependence than the T ―1 trend in both QD and EQD, which is attributed to the thermal expansion effect. Furthermore, the relaxation of hot electrons proceeds faster and shows stronger temperature dependence in the EQD than in the QD. Our work demonstrates that the shape of quantum dots has a strong impact on the electron decay dynamics.
Top-30
Citations by journals
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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1 publication, 3.13%
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Citations by publishers
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American Chemical Society (ACS)
16 publications, 50%
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American Institute of Physics (AIP)
3 publications, 9.38%
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Elsevier
2 publications, 6.25%
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Royal Society of Chemistry (RSC)
2 publications, 6.25%
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American Physical Society (APS)
1 publication, 3.13%
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Multidisciplinary Digital Publishing Institute (MDPI)
1 publication, 3.13%
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Springer Nature
1 publication, 3.13%
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IOP Publishing
1 publication, 3.13%
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Wiley
1 publication, 3.13%
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Optical Society of America
1 publication, 3.13%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 3.13%
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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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Chen L. et al. Shape and Temperature Dependence of Hot Carrier Relaxation Dynamics in Spherical and Elongated CdSe Quantum Dots // Journal of Physical Chemistry C. 2011. Vol. 115. No. 23. pp. 11400-11406.
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Chen L., Bao H., Tan T., Prezhdo O., Ruan X. Shape and Temperature Dependence of Hot Carrier Relaxation Dynamics in Spherical and Elongated CdSe Quantum Dots // Journal of Physical Chemistry C. 2011. Vol. 115. No. 23. pp. 11400-11406.
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TY - JOUR
DO - 10.1021/jp201408m
UR - https://doi.org/10.1021/jp201408m
TI - Shape and Temperature Dependence of Hot Carrier Relaxation Dynamics in Spherical and Elongated CdSe Quantum Dots
T2 - Journal of Physical Chemistry C
AU - Tan, Taizhi
AU - Chen, Liangliang
AU - Bao, Hua
AU - Prezhdo, Oleg
AU - Ruan, Xiulin
PY - 2011
DA - 2011/05/19 00:00:00
PB - American Chemical Society (ACS)
SP - 11400-11406
IS - 23
VL - 115
SN - 1932-7447
SN - 1932-7455
ER -
Cite this
BibTex
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@article{2011_Chen,
author = {Taizhi Tan and Liangliang Chen and Hua Bao and Oleg Prezhdo and Xiulin Ruan},
title = {Shape and Temperature Dependence of Hot Carrier Relaxation Dynamics in Spherical and Elongated CdSe Quantum Dots},
journal = {Journal of Physical Chemistry C},
year = {2011},
volume = {115},
publisher = {American Chemical Society (ACS)},
month = {may},
url = {https://doi.org/10.1021/jp201408m},
number = {23},
pages = {11400--11406},
doi = {10.1021/jp201408m}
}
Cite this
MLA
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Chen, Liangliang, et al. “Shape and Temperature Dependence of Hot Carrier Relaxation Dynamics in Spherical and Elongated CdSe Quantum Dots.” Journal of Physical Chemistry C, vol. 115, no. 23, May. 2011, pp. 11400-11406. https://doi.org/10.1021/jp201408m.