Nonradiative resonant energy transfer between PbS QDs in porous matrix

被引：3
|
作者：
Ushakova, Elena V. [1 ]
Litvin, Aleksandr P. [1 ]
Parfenov, Peter S. [1 ]
Fedorov, Anatoly V. [1 ]
Cherevkov, Sergei A. [1 ]
Baranov, Alexander V. [1 ]
机构：
[1] Natl Res Univ Informat Technol Mech & Opt, St Petersburg 197101, Russia
来源：
NANOPHOTONIC MATERIALS X | 2013年 / 8807卷
关键词：
quantum dots; FRET; PbS; absorption and PL spectroscopy; PL decay measurement; QUANTUM DOTS; LUMINESCENCE; SPECTROSCOPY; NANOCRYSTALS; DECAY;
D O I：
10.1117/12.2023035
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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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页数：6
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