ACS applied materials & interfaces, volume 9, issue 41, pages 36173-36180
HgSe Self-Doped Nanocrystals as a Platform to Investigate the Effects of Vanishing Confinement
Bertille Martinez
1, 2
,
Clément Livache
1, 2
,
Louis Donald Notemgnou Mouafo
3
,
Nicolas Goubet
1, 2
,
Sean E. Keuleyan
4
,
Hervé Cruguel
2
,
S. Ithurria
1, 5
,
Hervé Aubin
1, 5
,
A. Ouerghi
6
,
Bernard Doudin
3
,
Emmanuelle Lacaze
2
,
Benoît Dubertret
1, 5
,
M. Silly
7
,
R.P.S.M. Lobo
1, 5
,
J.-F. Dayen
3
,
4
Voxtel, Inc., University of Oregon, CAMCOR, 1241 University of Oregon, Eugene, Oregon 97403, United States
|
6
Centre de Nanosciences et de Nanotechnologies, CNRS, Univ. Paris-Sud, Université Paris-Saclay, C2N—Marcoussis, 91460 Marcoussis, France
|
7
Synchrotron-SOLEIL, Saint-Aubin, BP48, F91192 Gif
sur Yvette Cedex, France
|
Publication type: Journal Article
Publication date: 2017-10-06
Journal:
ACS applied materials & interfaces
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 9.5
ISSN: 19448244, 19448252
General Materials Science
Abstract
Self-doped colloidal quantum dots (CQDs) attract a strong interest for the design of a new generation of low-cost infrared (IR) optoelectronic devices because of their tunable intraband absorption feature in the mid-IR region. However, very little remains known about their electronic structure which combines confinement and an inverted band structure, complicating the design of optimized devices. We use a combination of IR spectroscopy and photoemission to determine the absolute energy levels of HgSe CQDs with various sizes and surface chemistries. We demonstrate that the filling of the CQD states ranges from 2 electrons per CQD at small sizes (<5 nm) to more than 18 electrons per CQD at large sizes (≈20 nm). HgSe CQDs are also an interesting platform to observe vanishing confinement in colloidal nanoparticles. We present lines of evidence for a semiconductor-to-metal transition at the CQD level, through temperature-dependent absorption and transport measurements. In contrast with bulk systems, the transition is the result of the vanishing confinement rather than the increase of the doping level.
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Citations by publishers
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1 publication, 2.33%
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1 publication, 2.33%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 2.33%
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5
10
15
20
25
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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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Martinez B. et al. HgSe Self-Doped Nanocrystals as a Platform to Investigate the Effects of Vanishing Confinement // ACS applied materials & interfaces. 2017. Vol. 9. No. 41. pp. 36173-36180.
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Martinez B., Livache C., Notemgnou Mouafo L. D., Goubet N., Keuleyan S. E., Cruguel H., Ithurria S., Aubin H., Ouerghi A., Doudin B., Lacaze E., Dubertret B., Silly M., Lobo R., Dayen J., Lhuillier E. HgSe Self-Doped Nanocrystals as a Platform to Investigate the Effects of Vanishing Confinement // ACS applied materials & interfaces. 2017. Vol. 9. No. 41. pp. 36173-36180.
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TY - JOUR
DO - 10.1021/acsami.7b10665
UR - https://doi.org/10.1021/acsami.7b10665
TI - HgSe Self-Doped Nanocrystals as a Platform to Investigate the Effects of Vanishing Confinement
T2 - ACS applied materials & interfaces
AU - Notemgnou Mouafo, Louis Donald
AU - Cruguel, Hervé
AU - Lacaze, Emmanuelle
AU - Keuleyan, Sean E.
AU - Ithurria, S.
AU - Aubin, Hervé
AU - Ouerghi, A.
AU - Lhuillier, Emmanuel
AU - Martinez, Bertille
AU - Livache, Clément
AU - Goubet, Nicolas
AU - Doudin, Bernard
AU - Dubertret, Benoît
AU - Silly, M.
AU - Lobo, R.P.S.M.
AU - Dayen, J.-F.
PY - 2017
DA - 2017/10/06 00:00:00
PB - American Chemical Society (ACS)
SP - 36173-36180
IS - 41
VL - 9
SN - 1944-8244
SN - 1944-8252
ER -
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@article{2017_Martinez,
author = {Louis Donald Notemgnou Mouafo and Hervé Cruguel and Emmanuelle Lacaze and Sean E. Keuleyan and S. Ithurria and Hervé Aubin and A. Ouerghi and Emmanuel Lhuillier and Bertille Martinez and Clément Livache and Nicolas Goubet and Bernard Doudin and Benoît Dubertret and M. Silly and R.P.S.M. Lobo and J.-F. Dayen},
title = {HgSe Self-Doped Nanocrystals as a Platform to Investigate the Effects of Vanishing Confinement},
journal = {ACS applied materials & interfaces},
year = {2017},
volume = {9},
publisher = {American Chemical Society (ACS)},
month = {oct},
url = {https://doi.org/10.1021/acsami.7b10665},
number = {41},
pages = {36173--36180},
doi = {10.1021/acsami.7b10665}
}
Cite this
MLA
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Martinez, Bertille, et al. “HgSe Self-Doped Nanocrystals as a Platform to Investigate the Effects of Vanishing Confinement.” ACS applied materials & interfaces, vol. 9, no. 41, Oct. 2017, pp. 36173-36180. https://doi.org/10.1021/acsami.7b10665.