Journal of Chemical Physics, volume 106, issue 23, pages 9869-9882

The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state

Publication typeJournal Article
Publication date1997-06-15
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor4.4
ISSN00219606, 10897690
Physical and Theoretical Chemistry
General Physics and Astronomy
Abstract

We study the luminescence of surface modified CdSe nanocrystallites. There has been much speculation as to the origin of the band edge emission in these quantum confined structures. Because of their large surface to volume ratios it has been suggested that the emission originates from surface-related states. However, recent theory suggests that the band edge luminescence arises from an optically inactive fine structure state or “dark” exciton. To address this issue we modify the surface of CdSe nanocrystallites with a variety of organic and inorganic ligands. We then monitor the effect changing the surface has on the energetics of the band edge luminescence through photoluminescence and fluorescence line narrowing experiments. Our results are compared with theoretical predictions for the nonresonant and resonant luminescence. We find good agreement between experiment and theory for CdSe nanocrystallites passivated with trioctylphosphine oxide, ZnS, 4-picoline, 4-(trifluoromethyl)thiophenol, and tris(2-ethylhexyl)phosphate. The lack of dependence of our data on surface modification is consistent with a dark exciton description of the band edge luminescence.

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Kuno M. et al. The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state // Journal of Chemical Physics. 1997. Vol. 106. No. 23. pp. 9869-9882.
GOST all authors (up to 50) Copy
Kuno M., Lee J. K., Dabbousi B. O., Mikulec F. V., Bawendi M. G. The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state // Journal of Chemical Physics. 1997. Vol. 106. No. 23. pp. 9869-9882.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1063/1.473875
UR - https://doi.org/10.1063/1.473875
TI - The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state
T2 - Journal of Chemical Physics
AU - Kuno, M
AU - Lee, J. K.
AU - Dabbousi, B O
AU - Mikulec, F V
AU - Bawendi, M G
PY - 1997
DA - 1997/06/15 00:00:00
PB - American Institute of Physics (AIP)
SP - 9869-9882
IS - 23
VL - 106
SN - 0021-9606
SN - 1089-7690
ER -
BibTex |
Cite this
BibTex Copy
@article{1997_Kuno,
author = {M Kuno and J. K. Lee and B O Dabbousi and F V Mikulec and M G Bawendi},
title = {The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state},
journal = {Journal of Chemical Physics},
year = {1997},
volume = {106},
publisher = {American Institute of Physics (AIP)},
month = {jun},
url = {https://doi.org/10.1063/1.473875},
number = {23},
pages = {9869--9882},
doi = {10.1063/1.473875}
}
MLA
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MLA Copy
Kuno, M., et al. “The band edge luminescence of surface modified CdSe nanocrystallites: Probing the luminescing state.” Journal of Chemical Physics, vol. 106, no. 23, Jun. 1997, pp. 9869-9882. https://doi.org/10.1063/1.473875.
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