Optical properties and aging of PbS quantum dots embedded in a porous matrix

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

doi:10.1117/12.2023025

13 September 2013 Optical properties and aging of PbS quantum dots embedded in a porous matrix

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

Author Affiliations +

Proceedings Volume 8807, Nanophotonic Materials X; 88070T (2013) https://doi.org/10.1117/12.2023025
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

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.

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Aleksandr P. Litvin, Peter S. Parfenov, Elena V. Ushakova, Anatoly V. Fedorov, Mikhail V. Artemyev, Anatoly V. Prudnikau, Ivan D. Rukhlenko, and Alexander V. Baranov "Optical properties and aging of PbS quantum dots embedded in a porous matrix", Proc. SPIE 8807, Nanophotonic Materials X, 88070T (13 September 2013); https://doi.org/10.1117/12.2023025

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