Journal of Physical Chemistry B, volume 106, issue 41, pages 10634-10640

Interband and Intraband Optical Studies of PbSe Colloidal Quantum Dots

Publication typeJournal Article
Publication date2002-09-24
Quartile SCImago
Q1
Quartile WOS
Q3
Impact factor3.3
ISSN15206106, 15205207
Materials Chemistry
Surfaces, Coatings and Films
Physical and Theoretical Chemistry
Abstract
PbSe nanocrystal colloids exhibit a well-defined excitonic structure with the lowest energy exciton tuning from 0.5 to 1 eV, as a function of size. Band-edge fluorescence is observed from 1.2 to 2 μm with a small Stokes shift, sub-μs lifetime, and near-unity quantum yield. Upon pumping at 1.064 μm, the first exciton decay is consistent with radiative relaxation at low pump intensity and with Auger recombination at higher pump intensities. Optically induced absorption is observed at approximately midgap. These transitions exhibit strengths similar to the interband exciton and are size-tunable. They are assigned to the 1Se,h−1Pe,h and 1Pe,h−1De,h intraband excitations. Intraband pump−probe measurements of the 1Se,h−1Pe,h transition reveal a short lifetime and the absence of the phonon bottleneck.

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Wehrenberg B. L., Wang C., Guyot-Sionnest P. Interband and Intraband Optical Studies of PbSe Colloidal Quantum Dots // Journal of Physical Chemistry B. 2002. Vol. 106. No. 41. pp. 10634-10640.
GOST all authors (up to 50) Copy
Wehrenberg B. L., Wang C., Guyot-Sionnest P. Interband and Intraband Optical Studies of PbSe Colloidal Quantum Dots // Journal of Physical Chemistry B. 2002. Vol. 106. No. 41. pp. 10634-10640.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/jp021187e
UR - https://doi.org/10.1021/jp021187e
TI - Interband and Intraband Optical Studies of PbSe Colloidal Quantum Dots
T2 - Journal of Physical Chemistry B
AU - Wehrenberg, Brian L.
AU - Wang, Congjun
AU - Guyot-Sionnest, Philippe
PY - 2002
DA - 2002/09/24 00:00:00
PB - American Chemical Society (ACS)
SP - 10634-10640
IS - 41
VL - 106
SN - 1520-6106
SN - 1520-5207
ER -
BibTex |
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BibTex Copy
@article{2002_Wehrenberg,
author = {Brian L. Wehrenberg and Congjun Wang and Philippe Guyot-Sionnest},
title = {Interband and Intraband Optical Studies of PbSe Colloidal Quantum Dots},
journal = {Journal of Physical Chemistry B},
year = {2002},
volume = {106},
publisher = {American Chemical Society (ACS)},
month = {sep},
url = {https://doi.org/10.1021/jp021187e},
number = {41},
pages = {10634--10640},
doi = {10.1021/jp021187e}
}
MLA
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MLA Copy
Wehrenberg, Brian L., et al. “Interband and Intraband Optical Studies of PbSe Colloidal Quantum Dots.” Journal of Physical Chemistry B, vol. 106, no. 41, Sep. 2002, pp. 10634-10640. https://doi.org/10.1021/jp021187e.
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