Nature Materials, volume 19, issue 3, pages 323-329
Quantum dot solids showing state-resolved band-like transport
Publication type: Journal Article
Publication date: 2020-01-27
Journal:
Nature Materials
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 41.2
ISSN: 14761122, 14764660
General Chemistry
Condensed Matter Physics
General Materials Science
Mechanical Engineering
Mechanics of Materials
Abstract
Improving charge mobility in quantum dot (QD) films is important for the performance of photodetectors, solar cells and light-emitting diodes. However, these applications also require preservation of well defined QD electronic states and optical transitions. Here, we present HgTe QD films that show high mobility for charges transported through discrete QD states. A hybrid surface passivation process efficiently eliminates surface states, provides tunable air-stable n and p doping and enables hysteresis-free filling of QD states evidenced by strong conductance modulation. QD films dried at room temperature without any post-treatments exhibit mobility up to μ ~ 8 cm2 V−1 s−1 at a low carrier density of less than one electron per QD, band-like behaviour down to 77 K, and similar drift and Hall mobilities at all temperatures. This unprecedented set of electronic properties raises important questions about the delocalization and hopping mechanisms for transport in QD solids, and introduces opportunities for improving QD technologies. High charge mobility while retaining signatures of quantum-confined states is obtained in films of surface-passivated HgTe quantum dots.
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Citations by publishers
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SPIE
1 publication, 0.68%
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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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Lan X. et al. Quantum dot solids showing state-resolved band-like transport // Nature Materials. 2020. Vol. 19. No. 3. pp. 323-329.
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Lan X., Chen M., Hudson M. H., Kamysbayev V., Wang Y., Guyot-Sionnest P., Talapin D. V. Quantum dot solids showing state-resolved band-like transport // Nature Materials. 2020. Vol. 19. No. 3. pp. 323-329.
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TY - JOUR
DO - 10.1038/s41563-019-0582-2
UR - https://doi.org/10.1038/s41563-019-0582-2
TI - Quantum dot solids showing state-resolved band-like transport
T2 - Nature Materials
AU - Lan, Xinzheng
AU - Chen, Meng-Lu
AU - Hudson, Margaret H
AU - Kamysbayev, Vladislav
AU - Wang, Yuanyuan
AU - Guyot-Sionnest, Philippe
AU - Talapin, Dmitri V.
PY - 2020
DA - 2020/01/27 00:00:00
PB - Springer Nature
SP - 323-329
IS - 3
VL - 19
SN - 1476-1122
SN - 1476-4660
ER -
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@article{2020_Lan,
author = {Xinzheng Lan and Meng-Lu Chen and Margaret H Hudson and Vladislav Kamysbayev and Yuanyuan Wang and Philippe Guyot-Sionnest and Dmitri V. Talapin},
title = {Quantum dot solids showing state-resolved band-like transport},
journal = {Nature Materials},
year = {2020},
volume = {19},
publisher = {Springer Nature},
month = {jan},
url = {https://doi.org/10.1038/s41563-019-0582-2},
number = {3},
pages = {323--329},
doi = {10.1038/s41563-019-0582-2}
}
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MLA
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Lan, Xinzheng, et al. “Quantum dot solids showing state-resolved band-like transport.” Nature Materials, vol. 19, no. 3, Jan. 2020, pp. 323-329. https://doi.org/10.1038/s41563-019-0582-2.