Chemical Physics Letters, volume 330, issue 3-4, pages 237-242

Radiative and nonradiative lifetimes of band edge states and deep trap states of CdS nanoparticles determined by time-correlated single photon counting

Publication typeJournal Article
Publication date2000-11-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor2.8
ISSN00092614
Physical and Theoretical Chemistry
General Physics and Astronomy
Abstract
Emission lifetimes of band edge and deep trap states of CdS nanoparticles with different surface capping were measured. For unpassivated nanoparticles with low fluorescence, the emission is dominated by deep trap states and the decay (5 ns) is independent of excitation intensity. For surface passivated nanoparticles with strong luminescence, the emission is dominated by band edge states with a fast and slow decay (a few ns and 50 ns). The slow decay is independent of intensity and the fast component is strongly dependent on intensity. The results support the model of exciton–exciton annihilation upon trap state saturation at high intensities.

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GOST Copy
Wu F. et al. Radiative and nonradiative lifetimes of band edge states and deep trap states of CdS nanoparticles determined by time-correlated single photon counting // Chemical Physics Letters. 2000. Vol. 330. No. 3-4. pp. 237-242.
GOST all authors (up to 50) Copy
Wu F., Zhang J., Kho R., Mehra R. K. Radiative and nonradiative lifetimes of band edge states and deep trap states of CdS nanoparticles determined by time-correlated single photon counting // Chemical Physics Letters. 2000. Vol. 330. No. 3-4. pp. 237-242.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1016/S0009-2614(00)01114-3
UR - https://doi.org/10.1016/S0009-2614(00)01114-3
TI - Radiative and nonradiative lifetimes of band edge states and deep trap states of CdS nanoparticles determined by time-correlated single photon counting
T2 - Chemical Physics Letters
AU - Wu, F.
AU - Kho, R.
AU - Mehra, R K
AU - Zhang, Jin
PY - 2000
DA - 2000/11/01 00:00:00
PB - Elsevier
SP - 237-242
IS - 3-4
VL - 330
SN - 0009-2614
ER -
BibTex |
Cite this
BibTex Copy
@article{2000_Wu,
author = {F. Wu and R. Kho and R K Mehra and Jin Zhang},
title = {Radiative and nonradiative lifetimes of band edge states and deep trap states of CdS nanoparticles determined by time-correlated single photon counting},
journal = {Chemical Physics Letters},
year = {2000},
volume = {330},
publisher = {Elsevier},
month = {nov},
url = {https://doi.org/10.1016/S0009-2614(00)01114-3},
number = {3-4},
pages = {237--242},
doi = {10.1016/S0009-2614(00)01114-3}
}
MLA
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MLA Copy
Wu, F., et al. “Radiative and nonradiative lifetimes of band edge states and deep trap states of CdS nanoparticles determined by time-correlated single photon counting.” Chemical Physics Letters, vol. 330, no. 3-4, Nov. 2000, pp. 237-242. https://doi.org/10.1016/S0009-2614(00)01114-3.
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