Nano Letters, volume 10, issue 9, pages 3577-3582

Role of Symmetry Breaking on the Optical Transitions in Lead-Salt Quantum Dots

Gero Nootz ^{1, 2}

Lazaro A. Padilha ¹

Peter D. Olszak ¹

Scott Webster ¹

David V. Hagan ^{1, 2}

Eric W. Van Stryland ^{1, 2}

Larissa Levina ³

Vlad Sukhovatkin ³

Lukasz Brzozowski ³

Edward H Sargent ³

Hide authors affiliations Show authors affiliations: 3 affiliations

CREOL & FPCE: The College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816 |

Physics Department, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816 |

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

Publication type: Journal Article

Publication date: 2010-08-24

American Chemical Society (ACS)

Journal: Nano Letters

Quartile SCImago

Quartile WOS

Impact factor: 10.8

ISSN: 15306984, 15306992

DOI: 10.1021/nl1018673

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General Chemistry

Condensed Matter Physics

General Materials Science

Mechanical Engineering

Bioengineering

Abstract

The influence of quantum confinement on the one- and two-photon absorption spectra (1PA and 2PA) of PbS and PbSe semiconductor quantum dots (QDs) is investigated. The results show 2PA peaks at energies where only 1PA transitions are predicted and 1PA peaks where only 2PA transitions are predicted by the often used isotropic k·p four-band envelope function formalism. The first experimentally identified two-photon absorption peak coincides with the energy of the first one photon allowed transition. This first two-photon peak cannot be explained by band anisotropy, verifying that the inversion symmetry of the wave functions is broken and relaxation of the parity selection rules has to be taken into account to explain optical transitions in lead-salt QDs. Thus, while the band anisotropy of the bulk semiconductor plays a role in the absorption spectra, especially for the more anisotropic PbSe QDs, a complete model of the absorption spectra, for both 1PA and 2PA, must also include symmetry breaking of the quantum confined wave functions. These studies clarify the controversy of the origin of spectral features in lead-salt QDs.

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Citations by publishers

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American Chemical Society (ACS)	American Chemical Society (ACS), 26, 52% American Chemical Society (ACS) 26 publications, 52%
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Wiley	Wiley, 3, 6% Wiley 3 publications, 6%
Springer Nature	Springer Nature, 2, 4% Springer Nature 2 publications, 4%
IOP Publishing	IOP Publishing, 2, 4% IOP Publishing 2 publications, 4%
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Cambridge University Press	Cambridge University Press, 1, 2% Cambridge University Press 1 publication, 2%
Electrochemical Science Group, University of Belgrade	Electrochemical Science Group, University of Belgrade, 1, 2% Electrochemical Science Group, University of Belgrade 1 publication, 2%
Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii	Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii, 1, 2% Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii 1 publication, 2%
	5 10 15 20 25 30

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Nootz G. et al. Role of Symmetry Breaking on the Optical Transitions in Lead-Salt Quantum Dots // Nano Letters. 2010. Vol. 10. No. 9. pp. 3577-3582.

GOST all authors (up to 50) Copy

Nootz G., Padilha L. A., Olszak P. D., Webster S., Hagan D. V., Van Stryland E. W., Levina L., Sukhovatkin V., Brzozowski L., Sargent E. H. Role of Symmetry Breaking on the Optical Transitions in Lead-Salt Quantum Dots // Nano Letters. 2010. Vol. 10. No. 9. pp. 3577-3582.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1021/nl1018673

UR - https://doi.org/10.1021/nl1018673

TI - Role of Symmetry Breaking on the Optical Transitions in Lead-Salt Quantum Dots

T2 - Nano Letters

AU - Nootz, Gero

AU - Olszak, Peter D.

AU - Webster, Scott

AU - Levina, Larissa

AU - Sukhovatkin, Vlad

AU - Brzozowski, Lukasz

AU - Padilha, Lazaro A.

AU - Hagan, David V.

AU - Van Stryland, Eric W.

AU - Sargent, Edward H

PY - 2010

DA - 2010/08/24 00:00:00

PB - American Chemical Society (ACS)

SP - 3577-3582

IS - 9

VL - 10

SN - 1530-6984

SN - 1530-6992

ER -

BibTex |

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BibTex Copy

@article{2010_Nootz,

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

title = {Role of Symmetry Breaking on the Optical Transitions in Lead-Salt Quantum Dots},

journal = {Nano Letters},

year = {2010},

volume = {10},

publisher = {American Chemical Society (ACS)},

month = {aug},

url = {https://doi.org/10.1021/nl1018673},

number = {9},

pages = {3577--3582},

doi = {10.1021/nl1018673}

}

MLA

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MLA Copy

Nootz, Gero, et al. “Role of Symmetry Breaking on the Optical Transitions in Lead-Salt Quantum Dots.” Nano Letters, vol. 10, no. 9, Aug. 2010, pp. 3577-3582. https://doi.org/10.1021/nl1018673.

Found error?

Publisher

American Chemical Society (ACS)

Journal

Nano Letters

Quartile SCImago

Quartile WOS

Impact factor

10.8

ISSN

15306984 (Print)
15306992 (Electronic)