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Proceedings Paper

Optical properties and aging of PbS quantum dots embedded in a porous matrix
Author(s): Aleksandr P. Litvin; Peter S. Parfenov; Elena V. Ushakova; Anatoly V. Fedorov; Mikhail V. Artemyev; Anatoly V. Prudnikau; Ivan D. Rukhlenko; Alexander V. Baranov
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Paper Abstract

PbS quantum dots (QDs) with diameter of 2.9-7.4 nm were embedded into a porous matrix. The samples prepared by developed low-cost effortless method demonstrate linear dependencies of optical density and luminescence intensity on the QDs concentration and perfect homogeneity. Optical properties of quantum dots in the matrix were studied using absorption and steady-state and time-resolved photoluminescence spectroscopy. Luminescence lifetimes were found to be size-dependent and increase with decreasing of QDs size. The aging behavior of PbS QDs in a porous matrix was explored for a variety of QDs sizes. The energy transfer process in quasi-monodispersed PbS QDs ensemble was discovered.

Paper Details

Date Published: 13 September 2013
PDF: 7 pages
Proc. SPIE 8807, Nanophotonic Materials X, 88070T (13 September 2013); doi: 10.1117/12.2023025
Show Author Affiliations
Aleksandr 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)
Anatoly V. Prudnikau, Belarusian State Univ. (Belarus)
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. 8807:
Nanophotonic Materials X
Stefano Cabrini; Gilles Lérondel; Adam M. Schwartzberg; Taleb Mokari, Editor(s)

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