Registration Number
0212U008630,
0112U007321
, R & D reports
Title
Energy transfer in the multilayered metal and semiconductor nanostructures
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Head
Khalavka Yuriy Bogdanovych,
Registration Date
09-01-2013
Organization
Yuri Fedkovych Chernivtsi National University
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Conductometric control synthesis of nanoscale CdTe crystals can significantly improve their quality as a result precise value necessary precursors. Using the method of mathematical planning method (Scheffe) optimized synthesis conditions for low dimentional CdS / L-Cys with predictable properties, namely defined region of stable and unstable in time colloidal solutions NPs CdS / L-Cys were obtained in potentially oxidizing conditions. Use additional Na2EDTA precursor during synthesis CdS nanoparticles provides a more stable colloidal solutions and improve monospersnist system at low concentrations of Na2EDTA. It was found that the dominant mechanism of energy transfer between the semiconductor and metal nanoparticles is resonant nonradiative energy transfer, with its effectiveness dependent on the approaching the resonance conditions, as well as the distance between the donor and acceptor particles. Constants of energy efficiency for systems containing quantum dots with different resonant radiation and Foerster radius were determined. We figured out that duration of washing stage of composite films adsorption method "layer by layer" can be reduced to 2-3 minutes, because during this time there is desorption of weakly bound molecules from the surface of the film takes plase. This reduces the time of deposition of films without any loss of quality by 10 - 20%. It has been shown that solid heterofilms "Semiconductor - polymer", "Semiconductor - polymer - metal" demonstrate FRET transfer of energy that enables to obtain monochromatic luminescence and improve its output.
Product Description
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Бабенецький Віктор Єремійович
Буркут Володимир Ігорович
Вигнан Наталія Миколаївна
Копач Олег Вадимович
Крупко Олена Василівна
Наконечний Ігор Йосипович
Пилипко Вікторія Геннадіївна
Халавка Юрій Богданович
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2020-04-02
