Nano Letters, volume 20, issue 12, pages 8897-8902
Exciton Fine Structure in Lead Chalcogenide Quantum Dots: Valley Mixing and Crucial Role of Intervalley Electron–Hole Exchange
1
Ioffe Institute, St. Petersburg 194021, Russia
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2
Department of Physics, Jackson State University, Jackson, Mississippi 39217, United States
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Publication type: Journal Article
Publication date: 2020-11-10
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Bioengineering
Abstract
We study the exciton fine structure in quantum dots of multivalley lead chalcogenides. We demonstrate that intervalley electron-hole exchange interaction, ignored in previous studies, dramatically modifies the exciton fine structure and leads to appearance of the ultrabright valley-symmetric spin-triplet exciton state dominating interband optical absorption. Valley mixing leads to brightening of other symmetry-allowed spin-triplet states which dominate low-temperature photoluminescence.
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Avdeev I. D. et al. Exciton Fine Structure in Lead Chalcogenide Quantum Dots: Valley Mixing and Crucial Role of Intervalley Electron–Hole Exchange // Nano Letters. 2020. Vol. 20. No. 12. pp. 8897-8902.
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Avdeev I. D., Nestoklon M. O., Goupalov S. Exciton Fine Structure in Lead Chalcogenide Quantum Dots: Valley Mixing and Crucial Role of Intervalley Electron–Hole Exchange // Nano Letters. 2020. Vol. 20. No. 12. pp. 8897-8902.
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TY - JOUR
DO - 10.1021/acs.nanolett.0c03937
UR - https://doi.org/10.1021/acs.nanolett.0c03937
TI - Exciton Fine Structure in Lead Chalcogenide Quantum Dots: Valley Mixing and Crucial Role of Intervalley Electron–Hole Exchange
T2 - Nano Letters
AU - Avdeev, I. D.
AU - Nestoklon, M. O.
AU - Goupalov, Serguei
PY - 2020
DA - 2020/11/10
PB - American Chemical Society (ACS)
SP - 8897-8902
IS - 12
VL - 20
SN - 1530-6984
SN - 1530-6992
ER -
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@article{2020_Avdeev,
author = {I. D. Avdeev and M. O. Nestoklon and Serguei Goupalov},
title = {Exciton Fine Structure in Lead Chalcogenide Quantum Dots: Valley Mixing and Crucial Role of Intervalley Electron–Hole Exchange},
journal = {Nano Letters},
year = {2020},
volume = {20},
publisher = {American Chemical Society (ACS)},
month = {nov},
url = {https://doi.org/10.1021/acs.nanolett.0c03937},
number = {12},
pages = {8897--8902},
doi = {10.1021/acs.nanolett.0c03937}
}
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Avdeev, I. D., et al. “Exciton Fine Structure in Lead Chalcogenide Quantum Dots: Valley Mixing and Crucial Role of Intervalley Electron–Hole Exchange.” Nano Letters, vol. 20, no. 12, Nov. 2020, pp. 8897-8902. https://doi.org/10.1021/acs.nanolett.0c03937.