Open Access
Materials, volume 12, issue 19, pages 3219
Optical Properties, Morphology, and Stability of Iodide-Passivated Lead Sulfide Quantum Dots
Ivan D Skurlov
1
,
Iurii G Korzhenevskii
1
,
Anastasiia S Mudrak
1
,
Aliaksei Dubavik
1
,
Petr S Parfenov
1
,
Xiaoyu Zhang
2
,
Anatoly V. Fedorov
1
,
Aleksandr P. Litvin
1
,
Publication type: Journal Article
Publication date: 2019-10-01
PubMed ID:
31581439
General Materials Science
Abstract
Iodide atomic surface passivation of lead chalcogenides has spawned a race in efficiency of quantum dot (QD)-based optoelectronic devices. Further development of QD applications requires a deeper understanding of the passivation mechanisms. In the first part of the current study, we compare optics and electrophysical properties of lead sulfide (PbS) QDs with iodine ligands, obtained from different iodine sources. Methylammonium iodide (MAI), lead iodide (PbI2), and tetrabutylammonium iodide (TBAI) were used as iodine precursors. Using ultraviolet photoelectron spectroscopy, we show that different iodide sources change the QD HOMO/LUMO levels, allowing their fine tuning. AFM measurements suggest that colloidally-passivated QDs result in formation of more uniform thin films in one-step deposition. The second part of this paper is devoted to the PbS QDs with colloidally-exchanged shells (i.e., made from MAI and PbI2). We especially focus on QD optical properties and their stability during storage in ambient conditions. Colloidal lead iodide treatment is found to reduce the QD film resistivity and improve photoluminescence quantum yield (PLQY). At the same time stability of such QDs is reduced. MAI-treated QDs are found to be more stable in the ambient conditions but tend to agglomerate, which leads to undesirable changes in their optics.
Top-30
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Citations by publishers
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Multidisciplinary Digital Publishing Institute (MDPI)
3 publications, 27.27%
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Elsevier
3 publications, 27.27%
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2 publications, 18.18%
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1 publication, 9.09%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 9.09%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Skurlov I. D. et al. Optical Properties, Morphology, and Stability of Iodide-Passivated Lead Sulfide Quantum Dots // Materials. 2019. Vol. 12. No. 19. p. 3219.
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Skurlov I. D., Korzhenevskii I. G., Mudrak A. S., Dubavik A., Cherevkov S. A., Parfenov P. S., Zhang X., Fedorov A. V., Litvin A. P., Baranov A. E. Optical Properties, Morphology, and Stability of Iodide-Passivated Lead Sulfide Quantum Dots // Materials. 2019. Vol. 12. No. 19. p. 3219.
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TY - JOUR
DO - 10.3390/ma12193219
UR - https://doi.org/10.3390/ma12193219
TI - Optical Properties, Morphology, and Stability of Iodide-Passivated Lead Sulfide Quantum Dots
T2 - Materials
AU - Mudrak, Anastasiia S
AU - Dubavik, Aliaksei
AU - Cherevkov, Sergei A.
AU - Parfenov, Petr S
AU - Zhang, Xiaoyu
AU - Fedorov, Anatoly V.
AU - Litvin, Aleksandr P.
AU - Skurlov, Ivan D
AU - Korzhenevskii, Iurii G
AU - Baranov, Alexander E.
PY - 2019
DA - 2019/10/01 00:00:00
PB - Multidisciplinary Digital Publishing Institute (MDPI)
SP - 3219
IS - 19
VL - 12
PMID - 31581439
SN - 1996-1944
SN - 1996-1944
ER -
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@article{2019_Skurlov,
author = {Anastasiia S Mudrak and Aliaksei Dubavik and Sergei A. Cherevkov and Petr S Parfenov and Xiaoyu Zhang and Anatoly V. Fedorov and Aleksandr P. Litvin and Ivan D Skurlov and Iurii G Korzhenevskii and Alexander E. Baranov},
title = {Optical Properties, Morphology, and Stability of Iodide-Passivated Lead Sulfide Quantum Dots},
journal = {Materials},
year = {2019},
volume = {12},
publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},
month = {oct},
url = {https://doi.org/10.3390/ma12193219},
number = {19},
pages = {3219},
doi = {10.3390/ma12193219}
}
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Skurlov, Ivan D., et al. “Optical Properties, Morphology, and Stability of Iodide-Passivated Lead Sulfide Quantum Dots.” Materials, vol. 12, no. 19, Oct. 2019, p. 3219. https://doi.org/10.3390/ma12193219.