Nature Materials, volume 10, issue 12, pages 936-941

Colloidal nanoplatelets with two-dimensional electronic structure

S Ithurria 1
M D Tessier 1
B Mahler 1
R P S M Lobo 1
B Dubertret 1
Al. L. EFROS 2
Publication typeJournal Article
Publication date2011-10-23
Journal: Nature Materials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor41.2
ISSN14761122, 14764660
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Mechanics of Materials
Abstract
The syntheses of strongly anisotropic nanocrystals with one dimension much smaller than the two others, such as nanoplatelets, are still greatly underdeveloped. Here, we demonstrate the formation of atomically flat quasi-two-dimensional colloidal CdSe, CdS and CdTe nanoplatelets with well-defined thicknesses ranging from 4 to 11 monolayers. These nanoplatelets have the electronic properties of two-dimensional quantum wells formed by molecular beam epitaxy, and their thickness-dependent absorption and emission spectra are described very well within an eight-band Pidgeon-Brown model. They present an extremely narrow emission spectrum with full-width at half-maximum less than 40 meV at room temperature. The radiative fluorescent lifetime measured in CdSe nanoplatelets decreases with temperature, reaching 1 ns at 6 K, two orders of magnitude less than for spherical CdSe nanoparticles. This makes the nanoplatelets the fastest colloidal fluorescent emitters and strongly suggests that they show a giant oscillator strength transition.

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GOST |
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GOST Copy
Ithurria S. et al. Colloidal nanoplatelets with two-dimensional electronic structure // Nature Materials. 2011. Vol. 10. No. 12. pp. 936-941.
GOST all authors (up to 50) Copy
Ithurria S., Tessier M. D., Mahler B., Lobo R. P. S. M., Dubertret B., EFROS A. L. Colloidal nanoplatelets with two-dimensional electronic structure // Nature Materials. 2011. Vol. 10. No. 12. pp. 936-941.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1038/nmat3145
UR - https://doi.org/10.1038/nmat3145
TI - Colloidal nanoplatelets with two-dimensional electronic structure
T2 - Nature Materials
AU - Ithurria, S
AU - Tessier, M D
AU - Mahler, B
AU - Lobo, R P S M
AU - Dubertret, B
AU - EFROS, Al. L.
PY - 2011
DA - 2011/10/23 00:00:00
PB - Springer Nature
SP - 936-941
IS - 12
VL - 10
SN - 1476-1122
SN - 1476-4660
ER -
BibTex |
Cite this
BibTex Copy
@article{2011_Ithurria,
author = {S Ithurria and M D Tessier and B Mahler and R P S M Lobo and B Dubertret and Al. L. EFROS},
title = {Colloidal nanoplatelets with two-dimensional electronic structure},
journal = {Nature Materials},
year = {2011},
volume = {10},
publisher = {Springer Nature},
month = {oct},
url = {https://doi.org/10.1038/nmat3145},
number = {12},
pages = {936--941},
doi = {10.1038/nmat3145}
}
MLA
Cite this
MLA Copy
Ithurria, S., et al. “Colloidal nanoplatelets with two-dimensional electronic structure.” Nature Materials, vol. 10, no. 12, Oct. 2011, pp. 936-941. https://doi.org/10.1038/nmat3145.
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