Journal of Non-Crystalline Solids, volume 609, pages 122285
Ultrafast carrier dynamics of PbS quantum dots in glasses for light amplification
Publication type: Journal Article
Publication date: 2023-06-01
Journal:
Journal of Non-Crystalline Solids
Quartile SCImago
Q2
Quartile WOS
Q1
Impact factor: 3.5
ISSN: 00223093, 00223093
Materials Chemistry
Ceramics and Composites
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
Lead sulfide quantum dots (PbS QDs) have a unique performance in the near-infrared (NIR) range. In-situ precipitation of PbS QDs in glass not only improves the stability, but also is easy to be fabricated fiber compatible with silicon photonics. In this work, we reveal that absorption cross sections of PbS QDs at 1040 nm are 4–13 × 10−16 cm2, the bi- and tri-excitons lifetime are∼60 and ∼10 ps due to the trap-assisted Auger recombination using transient absorption (TA). Furthermore, we demonstrate the broadband net gain in 1500–1600 nm in single PbS QDs embedded glass with a gain threshold of = 4.1 (averaged number of excitons), and achieve the maximum gain time of ∼20 ps and gain coefficient of >120 cm−1. These results illustrate the existing obstacles to achieve the net gain in PbS QDs embedded glass, which is important for applications on fiber amplifiers, NIR laser and high-capacity telecommunication.
Top-30
Citations by journals
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Russian Chemical Reviews
1 publication, 100%
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Citations by publishers
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 100%
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Zhang W., Liu J., Liu C. L. Ultrafast carrier dynamics of PbS quantum dots in glasses for light amplification // Journal of Non-Crystalline Solids. 2023. Vol. 609. p. 122285.
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Zhang W., Liu J., Liu C. L. Ultrafast carrier dynamics of PbS quantum dots in glasses for light amplification // Journal of Non-Crystalline Solids. 2023. Vol. 609. p. 122285.
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TY - JOUR
DO - 10.1016/j.jnoncrysol.2023.122285
UR - https://doi.org/10.1016/j.jnoncrysol.2023.122285
TI - Ultrafast carrier dynamics of PbS quantum dots in glasses for light amplification
T2 - Journal of Non-Crystalline Solids
AU - Zhang, Wenchao
AU - Liu, Jingjing
AU - Liu, C L
PY - 2023
DA - 2023/06/01 00:00:00
PB - Elsevier
SP - 122285
VL - 609
SN - 0022-3093
SN - 0022-3093
ER -
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@article{2023_Zhang,
author = {Wenchao Zhang and Jingjing Liu and C L Liu},
title = {Ultrafast carrier dynamics of PbS quantum dots in glasses for light amplification},
journal = {Journal of Non-Crystalline Solids},
year = {2023},
volume = {609},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/j.jnoncrysol.2023.122285},
pages = {122285},
doi = {10.1016/j.jnoncrysol.2023.122285}
}