Physical Review B, volume 83, issue 15, publication number 155302

Size dependence of carrier dynamics and carrier multiplication in PbS quantum dots

Gero Nootz ^{1, 2}

Lazaro A Padilha ¹

Lazaro A. Padilha ¹

Larissa Levina ³

Vlad Sukhovatkin ³

Scott Webster ¹

Lukasz Brzozowski ³

Edward H Sargent ³

David J Hagan ^{1, 2}

David V. Hagan ^{1, 2}

Eric W. Van Stryland ^{1, 2}

Hide authors affiliations Show authors affiliations: 3 affiliations

CREOL: The College of Optics and Photonics, University of Central Florida, 4000 Central Florida Blvd., Orlando, Florida, 32816, USA |

Physics Department, University of Central Florida, 4000 Central Florida Blvd., Orlando, Florida, 32816, USA |

The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada, M5S3G4 |

Publication type: Journal Article

Publication date: 2011-04-05

American Physical Society (APS)

Journal: Physical Review B

Quartile SCImago

Quartile WOS

Impact factor: 3.7

ISSN: 24699950, 24699969, 10980121, 1550235X

DOI: 10.1103/PhysRevB.83.155302

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Electronic, Optical and Magnetic Materials

Condensed Matter Physics

Abstract

The time dynamics of the photoexcited carriers and carrier-multiplication efficiencies in PbS quantum dots (QDs) are investigated. In particular, we report on the carrier dynamics, including carrier multiplication, as a function of QD size and compare them to the bulk value. We show that the intraband 1P→1S decay becomes faster for smaller QDs, in agreement with the absence of a phonon bottleneck. Furthermore, as the size of the QDs decreases, the energy threshold for carrier multiplication shifts from the bulk value to higher energies. However, the energy threshold shift is smaller than the band-gap shift and, therefore, for the smallest QDs, the threshold approaches 2.35 Eg, which is close to the theoretical energy conservation limit of twice the band gap. We also show that the carrier-multiplication energy efficiency increases with decreasing QD size. By comparing to theoretical models, our results suggest that impact ionization is sufficient to explain carrier multiplication in QDs.

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Citations by journals

	1 2 3 4 5 6 7
ACS Nano	ACS Nano, 7, 12.96% ACS Nano 7 publications, 12.96%
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Nano Letters	Nano Letters, 3, 5.56% Nano Letters 3 publications, 5.56%
Physical Review B	Physical Review B, 2, 3.7% Physical Review B 2 publications, 3.7%
Nature Communications	Nature Communications, 2, 3.7% Nature Communications 2 publications, 3.7%
Advanced Materials	Advanced Materials, 2, 3.7% Advanced Materials 2 publications, 3.7%
Journal of the American Chemical Society	Journal of the American Chemical Society, 2, 3.7% Journal of the American Chemical Society 2 publications, 3.7%
Nanoscale	Nanoscale, 2, 3.7% Nanoscale 2 publications, 3.7%
Chemical Physics Reviews	Chemical Physics Reviews, 1, 1.85% Chemical Physics Reviews 1 publication, 1.85%
Applied Physics Letters	Applied Physics Letters, 1, 1.85% Applied Physics Letters 1 publication, 1.85%
Nanomaterials	Nanomaterials, 1, 1.85% Nanomaterials 1 publication, 1.85%
Materials	Materials, 1, 1.85% Materials 1 publication, 1.85%
Scientific Reports	Scientific Reports, 1, 1.85% Scientific Reports 1 publication, 1.85%
Journal of Luminescence	Journal of Luminescence, 1, 1.85% Journal of Luminescence 1 publication, 1.85%
Nanotechnology	Nanotechnology, 1, 1.85% Nanotechnology 1 publication, 1.85%
Journal Physics D: Applied Physics	Journal Physics D: Applied Physics, 1, 1.85% Journal Physics D: Applied Physics 1 publication, 1.85%
Renewable and Sustainable Energy Reviews	Renewable and Sustainable Energy Reviews, 1, 1.85% Renewable and Sustainable Energy Reviews 1 publication, 1.85%
Coordination Chemistry Reviews	Coordination Chemistry Reviews, 1, 1.85% Coordination Chemistry Reviews 1 publication, 1.85%
Advanced Optical Materials	Advanced Optical Materials, 1, 1.85% Advanced Optical Materials 1 publication, 1.85%
Advanced Energy Materials	Advanced Energy Materials, 1, 1.85% Advanced Energy Materials 1 publication, 1.85%
ACS Photonics	ACS Photonics, 1, 1.85% ACS Photonics 1 publication, 1.85%
Journal of Physical Chemistry C	Journal of Physical Chemistry C, 1, 1.85% Journal of Physical Chemistry C 1 publication, 1.85%
Chemistry of Materials	Chemistry of Materials, 1, 1.85% Chemistry of Materials 1 publication, 1.85%
Dalton Transactions	Dalton Transactions, 1, 1.85% Dalton Transactions 1 publication, 1.85%
Energy and Environmental Science	Energy and Environmental Science, 1, 1.85% Energy and Environmental Science 1 publication, 1.85%
Optics Express	Optics Express, 1, 1.85% Optics Express 1 publication, 1.85%
ACS Symposium Series	ACS Symposium Series, 1, 1.85% ACS Symposium Series 1 publication, 1.85%
Acta Physica Sinica	Acta Physica Sinica, 1, 1.85% Acta Physica Sinica 1 publication, 1.85%
	1 2 3 4 5 6 7

Citations by publishers

	5 10 15 20 25
American Chemical Society (ACS)	American Chemical Society (ACS), 23, 42.59% American Chemical Society (ACS) 23 publications, 42.59%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 8, 14.81% Royal Society of Chemistry (RSC) 8 publications, 14.81%
Wiley	Wiley, 5, 9.26% Wiley 5 publications, 9.26%
Springer Nature	Springer Nature, 3, 5.56% Springer Nature 3 publications, 5.56%
Elsevier	Elsevier, 3, 5.56% Elsevier 3 publications, 5.56%
American Institute of Physics (AIP)	American Institute of Physics (AIP), 2, 3.7% American Institute of Physics (AIP) 2 publications, 3.7%
American Physical Society (APS)	American Physical Society (APS), 2, 3.7% American Physical Society (APS) 2 publications, 3.7%
Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 2, 3.7% Multidisciplinary Digital Publishing Institute (MDPI) 2 publications, 3.7%
IOP Publishing	IOP Publishing, 2, 3.7% IOP Publishing 2 publications, 3.7%
Optical Society of America	Optical Society of America, 1, 1.85% Optical Society of America 1 publication, 1.85%
Chinese Physical Society	Chinese Physical Society, 1, 1.85% Chinese Physical Society 1 publication, 1.85%
Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii	Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii, 1, 1.85% Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii 1 publication, 1.85%
Hacettepe University	Hacettepe University, 1, 1.85% Hacettepe University 1 publication, 1.85%
	5 10 15 20 25

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Nootz G. et al. Size dependence of carrier dynamics and carrier multiplication in PbS quantum dots // Physical Review B. 2011. Vol. 83. No. 15. 155302

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Nootz G., Padilha L. A., Padilha L. A., Levina L., Sukhovatkin V., Webster S., Brzozowski L., Sargent E. H., Hagan D. J., Hagan D. V., Van Stryland E. W. Size dependence of carrier dynamics and carrier multiplication in PbS quantum dots // Physical Review B. 2011. Vol. 83. No. 15. 155302

RIS |

Cite this

RIS Copy

TY - JOUR

DO - 10.1103/PhysRevB.83.155302

UR - https://doi.org/10.1103/PhysRevB.83.155302

TI - Size dependence of carrier dynamics and carrier multiplication in PbS quantum dots

T2 - Physical Review B

AU - Nootz, Gero

AU - Padilha, Lazaro A

AU - Levina, Larissa

AU - Sukhovatkin, Vlad

AU - Webster, Scott

AU - Brzozowski, Lukasz

AU - Sargent, Edward H

AU - Hagan, David J

AU - Van Stryland, Eric W.

AU - Padilha, Lazaro A.

AU - Hagan, David V.

PY - 2011

DA - 2011/04/05 00:00:00

PB - American Physical Society (APS)

IS - 15

VL - 83

SN - 2469-9950

SN - 2469-9969

SN - 1098-0121

SN - 1550-235X

ER -

BibTex

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BibTex Copy

@article{2011_Nootz,

author = {Gero Nootz and Lazaro A Padilha and Larissa Levina and Vlad Sukhovatkin and Scott Webster and Lukasz Brzozowski and Edward H Sargent and David J Hagan and Eric W. Van Stryland and Lazaro A. Padilha and David V. Hagan},

title = {Size dependence of carrier dynamics and carrier multiplication in PbS quantum dots},

journal = {Physical Review B},

year = {2011},

volume = {83},

publisher = {American Physical Society (APS)},

month = {apr},

url = {https://doi.org/10.1103/PhysRevB.83.155302},

number = {15},

doi = {10.1103/PhysRevB.83.155302}

}

Found error?

Publisher

American Physical Society (APS)

Journal

Physical Review B

Quartile SCImago

Quartile WOS

Impact factor

3.7

ISSN

24699950 (Print)
24699969 (Electronic)
10980121 (Print)
1550235X (Electronic)