Journal of Physical Chemistry C, volume 122, issue 1, pages 859-865

Probing Charge Carrier Dynamics to Unveil the Role of Surface Ligands in HgTe Narrow Band Gap Nanocrystals

Bertille Martinez 1
Clément Livache 1
Nicolas Goubet 1
Amardeep Jagtap 1
Hervé Cruguel 1
A. Ouerghi 2
Emmanuelle Lacaze 1
M. Silly 3
2
 
Centre de Nanosciences et de Nanotechnologies, CNRS, Univ. Paris-Sud, Université Paris-Saclay, C2N − Marcoussis, 91460 Marcoussis, France
3
 
Synchrotron-SOLEIL, Saint-Aubin, BP48, F91192 Cedex Gif sur Yvette, France
Publication typeJournal Article
Publication date2017-12-29
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Abstract
Colloidal nanocrystals are an interesting platform for the design of low cost optoelectronic devices especially in the infrared range of wavelengths. Mercury chalcogenides have reached high maturity to address wavelengths above the telecom range (1.5 μm). However, no screening of the surface chemistry influence has been conducted yet. In this paper, we systematically probe the influence of a series of ligands, Cl–, SCN–, 1,2-ethanedithiol, 1,4-benzenedithiol, 1-octanethiol, 1-butanethiol, As2S3, and S2–, on the photoconductive properties of HgTe nanocrystal thin films. A high bandwidth, large dynamic transient photocurrent setup is used to determine the photocarrier dynamics. Two regimes are clearly identified. At the early stage (few nanoseconds) a fast decay of the photocurrent is resulting from recombination and trapping. Then transport enters in a multiple trapping regime where carriers present a continuously decreasing effective value of their mobility. The power law dependence of the conductance can...

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Martinez B. et al. Probing Charge Carrier Dynamics to Unveil the Role of Surface Ligands in HgTe Narrow Band Gap Nanocrystals // Journal of Physical Chemistry C. 2017. Vol. 122. No. 1. pp. 859-865.
GOST all authors (up to 50) Copy
Martinez B., Livache C., Goubet N., Jagtap A., Cruguel H., Ouerghi A., Lacaze E., Silly M., Lhuillier E. Probing Charge Carrier Dynamics to Unveil the Role of Surface Ligands in HgTe Narrow Band Gap Nanocrystals // Journal of Physical Chemistry C. 2017. Vol. 122. No. 1. pp. 859-865.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/acs.jpcc.7b09972
UR - https://doi.org/10.1021/acs.jpcc.7b09972
TI - Probing Charge Carrier Dynamics to Unveil the Role of Surface Ligands in HgTe Narrow Band Gap Nanocrystals
T2 - Journal of Physical Chemistry C
AU - Cruguel, Hervé
AU - Lacaze, Emmanuelle
AU - Martinez, Bertille
AU - Goubet, Nicolas
AU - Jagtap, Amardeep
AU - Ouerghi, A.
AU - Lhuillier, Emmanuel
AU - Livache, Clément
AU - Silly, M.
PY - 2017
DA - 2017/12/29 00:00:00
PB - American Chemical Society (ACS)
SP - 859-865
IS - 1
VL - 122
SN - 1932-7447
SN - 1932-7455
ER -
BibTex |
Cite this
BibTex Copy
@article{2017_Martinez,
author = {Hervé Cruguel and Emmanuelle Lacaze and Bertille Martinez and Nicolas Goubet and Amardeep Jagtap and A. Ouerghi and Emmanuel Lhuillier and Clément Livache and M. Silly},
title = {Probing Charge Carrier Dynamics to Unveil the Role of Surface Ligands in HgTe Narrow Band Gap Nanocrystals},
journal = {Journal of Physical Chemistry C},
year = {2017},
volume = {122},
publisher = {American Chemical Society (ACS)},
month = {dec},
url = {https://doi.org/10.1021/acs.jpcc.7b09972},
number = {1},
pages = {859--865},
doi = {10.1021/acs.jpcc.7b09972}
}
MLA
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Martinez, Bertille, et al. “Probing Charge Carrier Dynamics to Unveil the Role of Surface Ligands in HgTe Narrow Band Gap Nanocrystals.” Journal of Physical Chemistry C, vol. 122, no. 1, Dec. 2017, pp. 859-865. https://doi.org/10.1021/acs.jpcc.7b09972.
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