Nonradiative resonant energy transfer between PbS QDs in porous matrix

Elena V. Ushakova; Aleksandr P. Litvin; Peter S. Parfenov; Anatoly V. Fedorov; Sergei A. Cherevkov; Alexander V. Baranov

doi:10.1117/12.2023035

13 September 2013 Nonradiative resonant energy transfer between PbS QDs in porous matrix

Elena V. Ushakova, Aleksandr P. Litvin, Peter S. Parfenov, Anatoly V. Fedorov, Sergei A. Cherevkov, Alexander V. Baranov

Author Affiliations +

Proceedings Volume 8807, Nanophotonic Materials X; 88070W (2013) https://doi.org/10.1117/12.2023035
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

Abstract

Nonradiative fluorescence resonance energy transfer (FRET) between lead sulfide quantum dots (QDs) of two different sizes embedded in porous matrix is observed by a fluorescence spectroscopy. Analysis of decays of photoluminescence from QD mixture shows that energy transfer in studied systems is determined by static quenching, specific for direct contact between QD-donor and QD-acceptor in the QDs close-packed ensembles. From steady-state spectral analysis it was found that efficiency of energy transfer depends on the molar ratio QD-donor/QD-acceptor and energy transfer from the donor to the acceptor passes by several channels.

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Elena V. Ushakova, Aleksandr P. Litvin, Peter S. Parfenov, Anatoly V. Fedorov, Sergei A. Cherevkov, and Alexander V. Baranov "Nonradiative resonant energy transfer between PbS QDs in porous matrix", Proc. SPIE 8807, Nanophotonic Materials X, 88070W (13 September 2013); https://doi.org/10.1117/12.2023035

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