Journal of Luminescence, volume 121, issue 2, pages 573-587

Lifetime determination of materials that exhibit a stretched exponential luminescent decay

James E. Martin 1
Lauren E. Shea-Rohwer 1
1
 
Sandia National Laboratories, P.O. Box 5800, MS-1421, Albuquerque, NM 87185-1421, USA
Publication typeJournal Article
Publication date2006-12-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.6
ISSN00222313
General Chemistry
Biochemistry
Biophysics
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Abstract
We report frequency- and time-domain luminescent lifetime measurements for materials that exhibit a broad spectrum of lifetimes, specifically, those for which the observed decay dynamics can be described by a stretched exponential function. The spectrum of lifetimes of such materials can be characterized by an average lifetime, and in principle this average can be extracted from either time- or frequency-domain measurements. In practice, this requires some care, because the extent to which the various states are excited depends on how long their lifetime is relative to the excitation pulse width or period. For the complex luminescent materials ZnS:Cu,Al and CdS quantum dots we compare the average lifetime obtained from frequency-domain data and from time-domain data under both pulsed laser excitation and steady-state, dc excitation. The agreement between the average measured lifetimes is good, but not perfect, showing that quoted average lifetimes for complex materials can be dependent on the measurement technique. Finally, a spectrum of lifetimes is given that gives rise to stretched exponential relaxation and this spectrum is used to compute frequency-domain data for a stretched exponential material.

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Martin J. E., Shea-Rohwer L. E. Lifetime determination of materials that exhibit a stretched exponential luminescent decay // Journal of Luminescence. 2006. Vol. 121. No. 2. pp. 573-587.
GOST all authors (up to 50) Copy
Martin J. E., Shea-Rohwer L. E. Lifetime determination of materials that exhibit a stretched exponential luminescent decay // Journal of Luminescence. 2006. Vol. 121. No. 2. pp. 573-587.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1016/j.jlumin.2005.12.043
UR - https://doi.org/10.1016/j.jlumin.2005.12.043
TI - Lifetime determination of materials that exhibit a stretched exponential luminescent decay
T2 - Journal of Luminescence
AU - Martin, James E.
AU - Shea-Rohwer, Lauren E.
PY - 2006
DA - 2006/12/01 00:00:00
PB - Elsevier
SP - 573-587
IS - 2
VL - 121
SN - 0022-2313
ER -
BibTex |
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BibTex Copy
@article{2006_Martin,
author = {James E. Martin and Lauren E. Shea-Rohwer},
title = {Lifetime determination of materials that exhibit a stretched exponential luminescent decay},
journal = {Journal of Luminescence},
year = {2006},
volume = {121},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016/j.jlumin.2005.12.043},
number = {2},
pages = {573--587},
doi = {10.1016/j.jlumin.2005.12.043}
}
MLA
Cite this
MLA Copy
Martin, James E., and Lauren E. Shea-Rohwer. “Lifetime determination of materials that exhibit a stretched exponential luminescent decay.” Journal of Luminescence, vol. 121, no. 2, Dec. 2006, pp. 573-587. https://doi.org/10.1016/j.jlumin.2005.12.043.
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