Nature, volume 383, issue 6603, pages 802-804
Fluorescence intermittency in single cadmium selenide nanocrystals
M. Nirmal
1, 2
,
B O Dabbousi
1
,
M G Bawendi
1
,
J. J. Macklin
3, 4
,
J K Trautman
3, 4
,
T D Harris
3, 4
,
L E Brus
2, 4
3
seQ Ltd, Princeton, USA
|
4
Bell laboratories, Lucent Technologies, Murray Hill, USA
|
Publication type: Journal Article
Publication date: 1996-10-01
DOI:
10.1038/383802a0
Multidisciplinary
Abstract
SEMICONDUCTOR nanocrystals offer the opportunity to study the evolution of bulk materials properties as the size of a system increases from the molecular scale1,2. In addition, their strongly size-dependent optical properties render them attractive candidates as tunable light absorbers and emitters in optoelectronic devices such as light-emitting diodes3,4 and quantum-dot lasers5,6, and as optical probes of biological systems7. Here we show that light emission from single fluorescing nanocrystals of cadmium selenide under continuous excitation turns on and off intermittently with a characteristic timescale of about 0.5 seconds. This intermittency is not apparent from ensemble measurements on many nanocrystals. The dependence on excitation intensity and the change in on/off times when a passivating, high-bandgap shell of zinc sulphide encapsulates the nanocrystal8,9 suggests that the abrupt turning off of luminescence is caused by photo-ionization of the nanocrystal. Thus spectroscopic measurements on single nanocrystals can reveal hitherto unknown aspects of their photophysics.
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Citations by publishers
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American Chemical Society (ACS)
511 publications, 29.44%
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Elsevier
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Wiley
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18 publications, 1.04%
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17 publications, 0.98%
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Optical Society of America
17 publications, 0.98%
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Proceedings of the National Academy of Sciences (PNAS)
16 publications, 0.92%
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Materials Research Society
15 publications, 0.86%
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10 publications, 0.58%
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8 publications, 0.46%
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7 publications, 0.4%
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IEEE
3 publications, 0.17%
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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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Nirmal M. et al. Fluorescence intermittency in single cadmium selenide nanocrystals // Nature. 1996. Vol. 383. No. 6603. pp. 802-804.
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Nirmal M., Dabbousi B. O., Bawendi M. G., Macklin J. J., Trautman J. K., Harris T. D., Brus L. E. Fluorescence intermittency in single cadmium selenide nanocrystals // Nature. 1996. Vol. 383. No. 6603. pp. 802-804.
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TY - JOUR
DO - 10.1038/383802a0
UR - https://doi.org/10.1038/383802a0
TI - Fluorescence intermittency in single cadmium selenide nanocrystals
T2 - Nature
AU - Nirmal, M.
AU - Dabbousi, B O
AU - Bawendi, M G
AU - Macklin, J. J.
AU - Trautman, J K
AU - Harris, T D
AU - Brus, L E
PY - 1996
DA - 1996/10/01 00:00:00
PB - Springer Nature
SP - 802-804
IS - 6603
VL - 383
SN - 0028-0836
SN - 1476-4687
ER -
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@article{1996_Nirmal,
author = {M. Nirmal and B O Dabbousi and M G Bawendi and J. J. Macklin and J K Trautman and T D Harris and L E Brus},
title = {Fluorescence intermittency in single cadmium selenide nanocrystals},
journal = {Nature},
year = {1996},
volume = {383},
publisher = {Springer Nature},
month = {oct},
url = {https://doi.org/10.1038/383802a0},
number = {6603},
pages = {802--804},
doi = {10.1038/383802a0}
}
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MLA
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Nirmal, M., et al. “Fluorescence intermittency in single cadmium selenide nanocrystals.” Nature, vol. 383, no. 6603, Oct. 1996, pp. 802-804. https://doi.org/10.1038/383802a0.