Nature Materials, volume 21, issue 5, pages 533-539

Ultrafast exciton transport at early times in quantum dot solids

Zhilong Zhang ¹

Jooyoung Sung ^{1, 2}

Daniel. T. W. Toolan ³

Sanyang Han ¹

Raj Pandya ^{1, 4}

M. P. Weir ^{5, 6}

James Xiao ¹

Simon Dowland ¹

Mengxia Liu ¹

Anthony W Ryan ³

Richard A L Jones ⁷

Shujuan Huang ⁸

Akshay Rao ¹

Hide authors affiliations Show authors affiliations: 8 affiliations

Cavendish laboratory, University of Cambridge, Cambridge, UK |

Department of Emerging Materials Science, DGIST, Daegu, Republic of Korea |

Department of Chemistry, the University of Sheffield, Sheffield, UK |

⁴

Laboratoire Kastler Brossel, École Normale Superiéure-Université PSL, CNRS, Sorbonne Université, College de France, Paris, France

Sorbonne University

Collège de France

⁵

Department of Physics and Astronomy, The University of Sheffield, Sheffield, UK |

⁶

School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham, UK |

⁷

Department of Materials Science, University of Manchester, Manchester, UK |

⁸

School of Engineering, Macquarie University, Sydney, Australia |

Publication type: Journal Article

Publication date: 2022-03-07

Springer Nature

Journal: Nature Materials

Quartile SCImago

Quartile WOS

Impact factor: 41.2

ISSN: 14761122, 14764660

DOI: 10.1038/s41563-022-01204-6

Copy DOI

General Chemistry

Condensed Matter Physics

General Materials Science

Mechanical Engineering

Mechanics of Materials

Abstract

Quantum dot (QD) solids are an emerging platform for developing a range of optoelectronic devices. Thus, understanding exciton dynamics is essential towards developing and optimizing QD devices. Here, using transient absorption microscopy, we reveal the initial exciton dynamics in QDs with femtosecond timescales. We observe high exciton diffusivity (~102 cm2 s–1) in lead chalcogenide QDs within the first few hundred femtoseconds after photoexcitation followed by a transition to a slower regime (~10–1–1 cm2 s–1). QD solids with larger interdot distances exhibit higher initial diffusivity and a delayed transition to the slower regime, while higher QD packing density and heterogeneity accelerate this transition. The fast transport regime occurs only in materials with exciton Bohr radii much larger than the QD sizes, suggesting the transport of delocalized excitons in this regime and a transition to slower transport governed by exciton localization. These findings suggest routes to control the optoelectronic properties of QD solids. Understanding exciton dynamics in quantum dots is important for realizing their potential in optoelectronics. Here, the authors use femtosecond transient absorption microscopy to reveal ultrafast exciton transport, enhanced at larger interdot distance and taking place within hundreds of femtoseconds after generation.

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Citations by journals

	1 2 3 4 5
Nano Letters	Nano Letters, 5, 10.87% Nano Letters 5 publications, 10.87%
Journal of Physical Chemistry C	Journal of Physical Chemistry C, 4, 8.7% Journal of Physical Chemistry C 4 publications, 8.7%
Advanced Materials	Advanced Materials, 2, 4.35% Advanced Materials 2 publications, 4.35%
Advanced Energy Materials	Advanced Energy Materials, 2, 4.35% Advanced Energy Materials 2 publications, 4.35%
SmartMat	SmartMat, 1, 2.17% SmartMat 1 publication, 2.17%
Journal of Applied Physics	Journal of Applied Physics, 1, 2.17% Journal of Applied Physics 1 publication, 2.17%
Nature Materials	Nature Materials, 1, 2.17% Nature Materials 1 publication, 2.17%
Langmuir	Langmuir, 1, 2.17% Langmuir 1 publication, 2.17%
Physica E: Low-Dimensional Systems and Nanostructures	Physica E: Low-Dimensional Systems and Nanostructures, 1, 2.17% Physica E: Low-Dimensional Systems and Nanostructures 1 publication, 2.17%
Journal of Power Sources	Journal of Power Sources, 1, 2.17% Journal of Power Sources 1 publication, 2.17%
Materials Today Physics	Materials Today Physics, 1, 2.17% Materials Today Physics 1 publication, 2.17%
Journal of Alloys and Compounds	Journal of Alloys and Compounds, 1, 2.17% Journal of Alloys and Compounds 1 publication, 2.17%
Applied Physics A: Materials Science and Processing	Applied Physics A: Materials Science and Processing, 1, 2.17% Applied Physics A: Materials Science and Processing 1 publication, 2.17%
Advanced Materials Interfaces	Advanced Materials Interfaces, 1, 2.17% Advanced Materials Interfaces 1 publication, 2.17%
Solar RRL	Solar RRL, 1, 2.17% Solar RRL 1 publication, 2.17%
Nano-Micro Letters	Nano-Micro Letters, 1, 2.17% Nano-Micro Letters 1 publication, 2.17%
Materials Science in Semiconductor Processing	Materials Science in Semiconductor Processing, 1, 2.17% Materials Science in Semiconductor Processing 1 publication, 2.17%
International Journal of Molecular Sciences	International Journal of Molecular Sciences, 1, 2.17% International Journal of Molecular Sciences 1 publication, 2.17%
Angewandte Chemie	Angewandte Chemie, 1, 2.17% Angewandte Chemie 1 publication, 2.17%
Angewandte Chemie - International Edition	Angewandte Chemie - International Edition, 1, 2.17% Angewandte Chemie - International Edition 1 publication, 2.17%
Applied Surface Science	Applied Surface Science, 1, 2.17% Applied Surface Science 1 publication, 2.17%
Science advances	Science advances, 1, 2.17% Science advances 1 publication, 2.17%
ACS Nano	ACS Nano, 1, 2.17% ACS Nano 1 publication, 2.17%
Next Energy	Next Energy, 1, 2.17% Next Energy 1 publication, 2.17%
Journal of the American Chemical Society	Journal of the American Chemical Society, 1, 2.17% Journal of the American Chemical Society 1 publication, 2.17%
Nature Nanotechnology	Nature Nanotechnology, 1, 2.17% Nature Nanotechnology 1 publication, 2.17%
Science Bulletin	Science Bulletin, 1, 2.17% Science Bulletin 1 publication, 2.17%
Energy and Environmental Science	Energy and Environmental Science, 1, 2.17% Energy and Environmental Science 1 publication, 2.17%
Journal of Chemical Physics	Journal of Chemical Physics, 1, 2.17% Journal of Chemical Physics 1 publication, 2.17%
	1 2 3 4 5

Citations by publishers

	2 4 6 8 10 12 14
American Chemical Society (ACS)	American Chemical Society (ACS), 13, 28.26% American Chemical Society (ACS) 13 publications, 28.26%
Wiley	Wiley, 11, 23.91% Wiley 11 publications, 23.91%
Elsevier	Elsevier, 9, 19.57% Elsevier 9 publications, 19.57%
Springer Nature	Springer Nature, 5, 10.87% Springer Nature 5 publications, 10.87%
American Institute of Physics (AIP)	American Institute of Physics (AIP), 2, 4.35% American Institute of Physics (AIP) 2 publications, 4.35%
Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 2, 4.35% Multidisciplinary Digital Publishing Institute (MDPI) 2 publications, 4.35%
American Association for the Advancement of Science (AAAS)	American Association for the Advancement of Science (AAAS), 1, 2.17% American Association for the Advancement of Science (AAAS) 1 publication, 2.17%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 1, 2.17% Royal Society of Chemistry (RSC) 1 publication, 2.17%
Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii	Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii, 1, 2.17% Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii 1 publication, 2.17%
	2 4 6 8 10 12 14

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.
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Zhang Z. et al. Ultrafast exciton transport at early times in quantum dot solids // Nature Materials. 2022. Vol. 21. No. 5. pp. 533-539.

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Zhang Z., Sung J., Toolan D. T. W., Han S., Pandya R., Weir M. P., Xiao J., Dowland S., Liu M., Ryan A. W., Jones R. A. L., Huang S., Rao A. Ultrafast exciton transport at early times in quantum dot solids // Nature Materials. 2022. Vol. 21. No. 5. pp. 533-539.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1038/s41563-022-01204-6

UR - https://doi.org/10.1038/s41563-022-01204-6

TI - Ultrafast exciton transport at early times in quantum dot solids

T2 - Nature Materials

AU - Zhang, Zhilong

AU - Sung, Jooyoung

AU - Toolan, Daniel. T. W.

AU - Han, Sanyang

AU - Pandya, Raj

AU - Weir, M. P.

AU - Xiao, James

AU - Dowland, Simon

AU - Liu, Mengxia

AU - Ryan, Anthony W

AU - Jones, Richard A L

AU - Huang, Shujuan

AU - Rao, Akshay

PY - 2022

DA - 2022/03/07 00:00:00

PB - Springer Nature

SP - 533-539

IS - 5

VL - 21

SN - 1476-1122

SN - 1476-4660

ER -

BibTex |

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BibTex Copy

@article{2022_Zhang,

author = {Zhilong Zhang and Jooyoung Sung and Daniel. T. W. Toolan and Sanyang Han and Raj Pandya and M. P. Weir and James Xiao and Simon Dowland and Mengxia Liu and Anthony W Ryan and Richard A L Jones and Shujuan Huang and Akshay Rao},

title = {Ultrafast exciton transport at early times in quantum dot solids},

journal = {Nature Materials},

year = {2022},

volume = {21},

publisher = {Springer Nature},

month = {mar},

url = {https://doi.org/10.1038/s41563-022-01204-6},

number = {5},

pages = {533--539},

doi = {10.1038/s41563-022-01204-6}

}

MLA

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Zhang, Zhilong, et al. “Ultrafast exciton transport at early times in quantum dot solids.” Nature Materials, vol. 21, no. 5, Mar. 2022, pp. 533-539. https://doi.org/10.1038/s41563-022-01204-6.

Found error?

Publisher

Springer Nature

Journal

Nature Materials

Quartile SCImago

Quartile WOS

Impact factor

41.2

ISSN

14761122 (Print)
14764660 (Electronic)