Anomalous Size-Dependent Decay of Low-Energy Luminescence from PbS Quantum Dots in Colloidal Solution

Elena V. Ushakova; Aleksandr P. Litvin; Peter S. Parfenov; Anatoly V. Fedorov; Mikhail Artemyev; Anatoly V. Prudnikau; Ivan D. Rukhlenko; Alexander V. Baranov

doi:10.1021/nn3029106

Author(s)

Aleksandr P. Litvin
Peter S. Parfenov
Anatoly V. Fedorov
Mikhail Artemyev
Anatoly V. Prudnikau
Ivan D. Rukhlenko
Alexander V. Baranov

Detail(s)

Original language	English
Pages (from-to)	8913-8921
Journal / Publication	ACS Nano
Volume	6
Issue number	10
Online published	12 Sept 2012
Publication status	Published - 23 Oct 2012
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1021/nn3029106 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84867775589&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(a7b79398-5505-4e68-ab34-905ae5aac461).html

Abstract

We report on an anomalous size dependence of the room-temperature photoluminescence decay time from the lowest-energy state of PbS quantum dots in colloidal solution, which was found using the transient luminescence spectroscopy. The observed 10-fold reduction in the decay time (from ∼2.5 to 0.25 μs) with the increase in the quantum dots' diameter is explained by the existence of phonon-induced transitions between the in-gap state-whose energy drastically depends on the diameter-and the fundamental state of the quantum dots. © 2012 American Chemical Society.

Research Area(s)

in-gap electronic state, near-infrared, PbS quantum dots, phonon-induced transitions, photoluminescence decay, quantum transition dynamics, size dependence

Citation Format(s)

[ RIS ] [ BibTeX ]

Anomalous Size-Dependent Decay of Low-Energy Luminescence from PbS Quantum Dots in Colloidal Solution. / Ushakova, Elena V.; Litvin, Aleksandr P.; Parfenov, Peter S. et al.
In: ACS Nano, Vol. 6, No. 10, 23.10.2012, p. 8913-8921.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Ushakova, EV, Litvin, AP, Parfenov, PS, Fedorov, AV, Artemyev, M, Prudnikau, AV, Rukhlenko, ID & Baranov, AV 2012, 'Anomalous Size-Dependent Decay of Low-Energy Luminescence from PbS Quantum Dots in Colloidal Solution', ACS Nano, vol. 6, no. 10, pp. 8913-8921. https://doi.org/10.1021/nn3029106

Ushakova, E. V., Litvin, A. P., Parfenov, P. S., Fedorov, A. V., Artemyev, M., Prudnikau, A. V., Rukhlenko, I. D., & Baranov, A. V. (2012). Anomalous Size-Dependent Decay of Low-Energy Luminescence from PbS Quantum Dots in Colloidal Solution. ACS Nano, 6(10), 8913-8921. https://doi.org/10.1021/nn3029106

Ushakova EV, Litvin AP, Parfenov PS, Fedorov AV, Artemyev M, Prudnikau AV et al. Anomalous Size-Dependent Decay of Low-Energy Luminescence from PbS Quantum Dots in Colloidal Solution. ACS Nano. 2012 Oct 23;6(10):8913-8921. Epub 2012 Sept 12. doi: 10.1021/nn3029106

Ushakova, Elena V. ; Litvin, Aleksandr P. ; Parfenov, Peter S. et al. / Anomalous Size-Dependent Decay of Low-Energy Luminescence from PbS Quantum Dots in Colloidal Solution. In: ACS Nano. 2012 ; Vol. 6, No. 10. pp. 8913-8921.