Journal of Physical Chemistry C, volume 120, issue 21, pages 11744-11753
HgS and HgS/CdS Colloidal Quantum Dots with Infrared Intraband Transitions and Emergence of a Surface Plasmon
Publication type: Journal Article
Publication date: 2016-05-23
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
HgS colloidal quantum dots (CQDs) are synthesized at room temperature using a dual-phase method. The HgS CQDs ranging from 3 to 15 nm exhibit air-stable n-doping and infrared intraband absorptions. For HgS CQDs of small sizes, the doping density is close to 2 electrons per dot, while for larger ones, their intraband absorption peaks shift to as far as 10 μm and exhibit Lorentzian line shapes. Under reducing potentials, these long-wavelength absorption peaks increase in strength and blue shift. This behavior can be explained through a classical model of the local field, showing how the degenerate single-electron transitions shift to a frequency that is the quadratic mean of the individual transition and a surface plasmon coming from a number of oscillators. This indicates that the intraband absorption of large, n-doped HgS CQDs is therefore becoming a surface plasmon. The same synthetic method works for HgS/CdS core/shells. Encapsulating HgS in a CdS shell removes the natural n-doping of the HgS cores, res...
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Citations by publishers
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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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Shen G., Guyot-Sionnest P. HgS and HgS/CdS Colloidal Quantum Dots with Infrared Intraband Transitions and Emergence of a Surface Plasmon // Journal of Physical Chemistry C. 2016. Vol. 120. No. 21. pp. 11744-11753.
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Shen G., Guyot-Sionnest P. HgS and HgS/CdS Colloidal Quantum Dots with Infrared Intraband Transitions and Emergence of a Surface Plasmon // Journal of Physical Chemistry C. 2016. Vol. 120. No. 21. pp. 11744-11753.
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TY - JOUR
DO - 10.1021/acs.jpcc.6b04014
UR - https://doi.org/10.1021/acs.jpcc.6b04014
TI - HgS and HgS/CdS Colloidal Quantum Dots with Infrared Intraband Transitions and Emergence of a Surface Plasmon
T2 - Journal of Physical Chemistry C
AU - Shen, Guohua
AU - Guyot-Sionnest, Philippe
PY - 2016
DA - 2016/05/23 00:00:00
PB - American Chemical Society (ACS)
SP - 11744-11753
IS - 21
VL - 120
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2016_Shen,
author = {Guohua Shen and Philippe Guyot-Sionnest},
title = {HgS and HgS/CdS Colloidal Quantum Dots with Infrared Intraband Transitions and Emergence of a Surface Plasmon},
journal = {Journal of Physical Chemistry C},
year = {2016},
volume = {120},
publisher = {American Chemical Society (ACS)},
month = {may},
url = {https://doi.org/10.1021/acs.jpcc.6b04014},
number = {21},
pages = {11744--11753},
doi = {10.1021/acs.jpcc.6b04014}
}
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Shen, Guohua, and Philippe Guyot-Sionnest. “HgS and HgS/CdS Colloidal Quantum Dots with Infrared Intraband Transitions and Emergence of a Surface Plasmon.” Journal of Physical Chemistry C, vol. 120, no. 21, May. 2016, pp. 11744-11753. https://doi.org/10.1021/acs.jpcc.6b04014.