Physical Review B, volume 82, issue 12, publication number 125320

Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping

Maxim S. Gaponenko 1
Andrey A. Lutich 2
Nikolai A. Tolstik 1
Alexei A. Onushchenko 3
Alexander M. Malyarevich 1
Eugene P Petrov 4
E.P Petrov 4
Konstantin V. Yumashev 1
Publication typeJournal Article
Publication date2010-09-17
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN24699950, 24699969, 10980121, 1550235X
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
We report experimental evidence of the lowest exciton state splitting and carrier trapping in PbS quantum dots (QDs) in glass matrix. Our measurements of photoluminescence (PL) of PbS QDs using steady-state and time-resolved PL spectroscopy reveal strong temperature dependences of the PL intensity and decay kinetics. We find that consistent quantitative description of our experimental results can be achieved using a simple model taking into account the lowest 1S-1S exciton state splitting and multiphonon-assisted carrier trapping to states outside a PbS QD. Using our model, we estimate the lowest exciton splitting energy and lifetimes of the dark and bright exciton states of PbS QDs. Consistent with our model, the PL transition energy of PbS QDs deviates at higher temperatures from the one predicted based on the bulk PbS band-gap dependence due to the lowest 1S-1S exciton state splitting. Temperature-induced broadening of the PL spectrum of PbS QDs is explained by the exciton-phonon interaction.

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Gaponenko M. S. et al. Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping // Physical Review B. 2010. Vol. 82. No. 12. 125320
GOST all authors (up to 50) Copy
Gaponenko M. S., Lutich A. A., Tolstik N. A., Onushchenko A. A., Malyarevich A. M., Petrov E. P., Petrov E., Yumashev K. V. Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping // Physical Review B. 2010. Vol. 82. No. 12. 125320
RIS |
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RIS Copy
TY - JOUR
DO - 10.1103/physrevb.82.125320
UR - https://doi.org/10.1103/physrevb.82.125320
TI - Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping
T2 - Physical Review B
AU - Gaponenko, Maxim S.
AU - Lutich, Andrey A.
AU - Tolstik, Nikolai A.
AU - Onushchenko, Alexei A.
AU - Malyarevich, Alexander M.
AU - Petrov, Eugene P
AU - Yumashev, Konstantin V.
AU - Petrov, E.P
PY - 2010
DA - 2010/09/17 00:00:00
PB - American Physical Society (APS)
IS - 12
VL - 82
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
BibTex
Cite this
BibTex Copy
@article{2010_Gaponenko,
author = {Maxim S. Gaponenko and Andrey A. Lutich and Nikolai A. Tolstik and Alexei A. Onushchenko and Alexander M. Malyarevich and Eugene P Petrov and Konstantin V. Yumashev and E.P Petrov},
title = {Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping},
journal = {Physical Review B},
year = {2010},
volume = {82},
publisher = {American Physical Society (APS)},
month = {sep},
url = {https://doi.org/10.1103/physrevb.82.125320},
number = {12},
doi = {10.1103/physrevb.82.125320}
}
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