Proceedings Paper
Size-dependent room-temperature luminescence decay from PbS quantum dots| Format | Member Price | Non-Member Price |
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Paper Abstract
We study size dependence of kinetic and spectral properties of near-infrared luminescence from PbS quantum
dots in colloidal solution. Luminescence lifetimes are found to lie between 250 ns for the largest quantum
dots and 2:5 μs for the smallest ones, while the Stoke's shift is found to increase from 4-5 to 300 meV. These
results are explained by the presence of the long-living in-gap state, with the size-dependent energy. Analytical
modeling shows that the relaxation from this state is dominant in small quantum dots and negligible in large ones.
Biexponential luminescence decay with the size-dependent recombination rates is predicted for quantum dots
of all sizes.
Paper Details
Date Published: 20 November 2012
PDF: 7 pages
Proc. SPIE 8564, Nanophotonics and Micro/Nano Optics, 85641Z (20 November 2012); doi: 10.1117/12.2001073
Published in SPIE Proceedings Vol. 8564:
Nanophotonics and Micro/Nano Optics
Zhiping Zhou; Kazumi Wada, Editor(s)
PDF: 7 pages
Proc. SPIE 8564, Nanophotonics and Micro/Nano Optics, 85641Z (20 November 2012); doi: 10.1117/12.2001073
Show Author Affiliations
Alexander P. Litvin, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Peter S. Parfenov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Elena V. Ushakova, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Anatoly V. Fedorov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Mikhail V. Artemyev, Belarusian State Univ. (Belarus)
Peter S. Parfenov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Elena V. Ushakova, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Anatoly V. Fedorov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Mikhail V. Artemyev, Belarusian State Univ. (Belarus)
Anatoly V. Prudnikau, Belarusian State Univ. (Belarus)
Sergey A. Cherevkov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Ivan D. Rukhlenko, Monash Univ. (Australia)
Alexander V. Baranov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Sergey A. Cherevkov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Ivan D. Rukhlenko, Monash Univ. (Australia)
Alexander V. Baranov, National Research Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Published in SPIE Proceedings Vol. 8564:
Nanophotonics and Micro/Nano Optics
Zhiping Zhou; Kazumi Wada, Editor(s)
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