August 2018, № 6 (218), pages 110-115

doi: 10.25198/1814-6457-218-110

Alidzhanov E.K., Lantukh Yu.D, Letuta S.N., Pashkevitch S.N., Razdobreev D.A. THE EXCITATION ENERGY AND CHARGE TRANSFER IN DONOR-ACCEPTOR SYSTEMS BASED ON SEMICONDUCTOR POLYMERThe effectiveness of energy transfer process of photo-excitation in donor-acceptor (DA) systems formed from semiconductor polymer poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) with the addition of simple and endohedral fullerenes were investigated. It is shown that the energy transfer efficiency in the systems formed in the form of dilute solutions is on several orders of magni-tude higher than the theoretically expected energy transfer efficiency by the diffusion-controlled mechanism. On the basis of comparison of experimentally measured spectra of electron absorption of Y@C₈₂, C₆₀ C₇₀ toluene solutions and the MEH-PPV luminescence spectrum the corresponding Förster radii of resonance energy transfer were estimated. For the tested DA systems a significant effect of exciton mi-gration between polymer links on the process of luminescence quenching was estab-lished. It is shown that the DA system formed using endohedral fullerenes is most effective.Key words: donor-acceptor systems, resonance energy transfer, semiconductor polymer, fullerenes.

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About this article

Authors: Alidzhanov E.K., Pashkevich S.N., Letuta S.N., Lantuh Yu.D., Razdobreev D.A.

Year: 2018

doi: 10.25198/1814-6457-218-110

Editor-in-chief

Sergey Aleksandrovich
MIROSHNIKOV

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